Description of problem:
When use oc observe to approve CSR in my scenario, got the following error:
$ oc observe csr -- oc adm certificate approve 
E0731 15:30:08.142150 1601576 observe.go:465] observer: Failed to list <unspecified>: no kind "CertificateSigningRequestList" is registered for version "certificates.k8s.io/v1" in scheme "k8s.io/kubectl/pkg/scheme/scheme.go:28"
E0731 15:30:08.441191 1601576 observe.go:465] observer: Failed to list <unspecified>: no kind "CertificateSigningRequestList" is registered for version "certificates.k8s.io/v1" in scheme "k8s.io/kubectl/pkg/scheme/scheme.go:28"
E0731 15:30:10.040356 1601576 observe.go:465] observer: Failed to list <unspecified>: no kind "CertificateSigningRequestList" is registered for version "certificates.k8s.io/v1" in scheme "k8s.io/kubectl/pkg/scheme/scheme.go:28"
E0731 15:30:11.635552 1601576 observe.go:465] observer: Failed to list <unspecified>: no kind "CertificateSigningRequestList" is registered for version "certificates.k8s.io/v1" in scheme "k8s.io/kubectl/pkg/scheme/scheme.go:28"
E0731 15:30:13.232107 1601576 observe.go:465] observer: Failed to list <unspecified>: no kind "CertificateSigningRequestList" is registered for version "certificates.k8s.io/v1" in scheme "k8s.io/kubectl/pkg/scheme/scheme.go:28"
E0731 15:30:14.827765 1601576 observe.go:465] observer: Failed to list <unspecified>: no kind "CertificateSigningRequestList" is registered for version "certificates.k8s.io/v1" in scheme "k8s.io/kubectl/pkg/scheme/scheme.go:28"
E0731 15:30:16.424353 1601576 observe.go:465] observer: Failed to list <unspecified>: no kind "CertificateSigningRequestList" is registered for version "certificates.k8s.io/v1" in scheme "k8s.io/kubectl/pkg/scheme/scheme.go:28"
E0731 15:30:18.018771 1601576 observe.go:465] observer: Failed to list <unspecified>: no kind "CertificateSigningRequestList" is registered for version "certificates.k8s.io/v1" in scheme "k8s.io/kubectl/pkg/scheme/scheme.go:28"
E0731 15:30:19.613506 1601576 observe.go:465] observer: Failed to list <unspecified>: no kind "CertificateSigningRequestList" is registered for version "certificates.k8s.io/v1" in scheme "k8s.io/kubectl/pkg/scheme/scheme.go:28"
E0731 15:30:21.208162 1601576 observe.go:465] observer: Failed to list <unspecified>: no kind "CertificateSigningRequestList" is registered for version "certificates.k8s.io/v1" in scheme "k8s.io/kubectl/pkg/scheme/scheme.go:28"
E0731 15:30:22.801154 1601576 observe.go:465] observer: Failed to list <unspecified>: no kind "CertificateSigningRequestList" is registered for version "certificates.k8s.io/v1" in scheme "k8s.io/kubectl/pkg/scheme/scheme.go:28"
E0731 15:30:24.396635 1601576 observe.go:465] observer: Failed to list <unspecified>: no kind "CertificateSigningRequestList" is registered for version "certificates.k8s.io/v1" in scheme "k8s.io/kubectl/pkg/scheme/scheme.go:28"
E0731 15:30:25.996895 1601576 observe.go:465] observer: Failed to list <unspecified>: no kind "CertificateSigningRequestList" is registered for version "certificates.k8s.io/v1" in scheme "k8s.io/kubectl/pkg/scheme/scheme.go:28"
E0731 15:30:27.591665 1601576 observe.go:465] observer: Failed to list <unspecified>: no kind "CertificateSigningRequestList" is registered for version "certificates.k8s.io/v1" in scheme "k8s.io/kubectl/pkg/scheme/scheme.go:28"
E0731 15:30:29.186866 1601576 observe.go:465] observer: Failed to list <unspecified>: no kind "CertificateSigningRequestList" is registered for version "certificates.k8s.io/v1" in scheme "k8s.io/kubectl/pkg/scheme/scheme.go:28"
E0731 15:30:30.784218 1601576 observe.go:465] observer: Failed to list <unspecified>: no kind "CertificateSigningRequestList" is registered for version "certificates.k8s.io/v1" in scheme "k8s.io/kubectl/pkg/scheme/scheme.go:28"
E0731 15:30:32.382441 1601576 observe.go:465] observer: Failed to list <unspecified>: no kind "CertificateSigningRequestList" is registered for version "certificates.k8s.io/v1" in scheme "k8s.io/kubectl/pkg/scheme/scheme.go:28"
E0731 15:30:33.976176 1601576 observe.go:465] observer: Failed to list <unspecified>: no kind "CertificateSigningRequestList" is registered for version "certificates.k8s.io/v1" in scheme "k8s.io/kubectl/pkg/scheme/scheme.go:28"
E0731 15:30:35.572281 1601576 observe.go:465] observer: Failed to list <unspecified>: no kind "CertificateSigningRequestList" is registered for version "certificates.k8s.io/v1" in scheme "k8s.io/kubectl/pkg/scheme/scheme.go:28"
E0731 15:30:37.165401 1601576 observe.go:465] observer: Failed to list <unspecified>: no kind "CertificateSigningRequestList" is registered for version "certificates.k8s.io/v1" in scheme "k8s.io/kubectl/pkg/scheme/scheme.go:28"
E0731 15:30:38.761262 1601576 observe.go:465] observer: Failed to list <unspecified>: no kind "CertificateSigningRequestList" is registered for version "certificates.k8s.io/v1" in scheme "k8s.io/kubectl/pkg/scheme/scheme.go:28"
F0731 15:30:38.761298 1601576 observe.go:468] Maximum list errors of 20 reached, exiting



Version-Release number of selected component (if applicable):
$ oc version 
Client Version: 4.6.0-202007301828.p0-fea323c
Server Version: 4.6.0-0.nightly-2020-07-30-213123
Kubernetes Version: v4.6.0-202007301406.p0-dirty
$ oc get clusterversion
NAME      VERSION                             AVAILABLE   PROGRESSING   SINCE   STATUS
version   4.6.0-0.nightly-2020-07-30-213123   True        False         16m     Cluster version is 4.6.0-0.nightly-2020-07-30-213123


How reproducible:
Always

Steps to Reproduce:
1. Setup one UPI cluster
2. Approve node CSRs with `oc observe csr -- oc adm certificate approve`
3.

Actual results:
got following error:
E0731 15:30:08.142150 1601576 observe.go:465] observer: Failed to list <unspecified>: no kind "CertificateSigningRequestList" is registered for version "certificates.k8s.io/v1" in scheme "k8s.io/kubectl/pkg/scheme/scheme.go:28"
E0731 15:30:08.441191 1601576 observe.go:465] observer: Failed to list <unspecified>: no kind "CertificateSigningRequestList" is registered for version "certificates.k8s.io/v1" in scheme "k8s.io/kubectl/pkg/scheme/scheme.go:28"
E0731 15:30:10.040356 1601576 observe.go:465] observer: Failed to list <unspecified>: no kind "CertificateSigningRequestList" is registered for version "certificates.k8s.io/v1" in scheme "k8s.io/kubectl/pkg/scheme/scheme.go:28"
E0731 15:30:11.635552 1601576 observe.go:465] observer: Failed to list <unspecified>: no kind "CertificateSigningRequestList" is registered for version "certificates.k8s.io/v1" in scheme "k8s.io/kubectl/pkg/scheme/scheme.go:28"
E0731 15:30:13.232107 1601576 observe.go:465] observer: Failed to list <unspecified>: no kind "CertificateSigningRequestList" is registered for version "certificates.k8s.io/v1" in scheme "k8s.io/kubectl/pkg/scheme/scheme.go:28"
E0731 15:30:14.827765 1601576 observe.go:465] observer: Failed to list <unspecified>: no kind "CertificateSigningRequestList" is registered for version "certificates.k8s.io/v1" in scheme "k8s.io/kubectl/pkg/scheme/scheme.go:28"
E0731 15:30:16.424353 1601576 observe.go:465] observer: Failed to list <unspecified>: no kind "CertificateSigningRequestList" is registered for version "certificates.k8s.io/v1" in scheme "k8s.io/kubectl/pkg/scheme/scheme.go:28"
E0731 15:30:18.018771 1601576 observe.go:465] observer: Failed to list <unspecified>: no kind "CertificateSigningRequestList" is registered for version "certificates.k8s.io/v1" in scheme "k8s.io/kubectl/pkg/scheme/scheme.go:28"
E0731 15:30:19.613506 1601576 observe.go:465] observer: Failed to list <unspecified>: no kind "CertificateSigningRequestList" is registered for version "certificates.k8s.io/v1" in scheme "k8s.io/kubectl/pkg/scheme/scheme.go:28"
E0731 15:30:21.208162 1601576 observe.go:465] observer: Failed to list <unspecified>: no kind "CertificateSigningRequestList" is registered for version "certificates.k8s.io/v1" in scheme "k8s.io/kubectl/pkg/scheme/scheme.go:28"
E0731 15:30:22.801154 1601576 observe.go:465] observer: Failed to list <unspecified>: no kind "CertificateSigningRequestList" is registered for version "certificates.k8s.io/v1" in scheme "k8s.io/kubectl/pkg/scheme/scheme.go:28"
E0731 15:30:24.396635 1601576 observe.go:465] observer: Failed to list <unspecified>: no kind "CertificateSigningRequestList" is registered for version "certificates.k8s.io/v1" in scheme "k8s.io/kubectl/pkg/scheme/scheme.go:28"
E0731 15:30:25.996895 1601576 observe.go:465] observer: Failed to list <unspecified>: no kind "CertificateSigningRequestList" is registered for version "certificates.k8s.io/v1" in scheme "k8s.io/kubectl/pkg/scheme/scheme.go:28"
E0731 15:30:27.591665 1601576 observe.go:465] observer: Failed to list <unspecified>: no kind "CertificateSigningRequestList" is registered for version "certificates.k8s.io/v1" in scheme "k8s.io/kubectl/pkg/scheme/scheme.go:28"
E0731 15:30:29.186866 1601576 observe.go:465] observer: Failed to list <unspecified>: no kind "CertificateSigningRequestList" is registered for version "certificates.k8s.io/v1" in scheme "k8s.io/kubectl/pkg/scheme/scheme.go:28"
E0731 15:30:30.784218 1601576 observe.go:465] observer: Failed to list <unspecified>: no kind "CertificateSigningRequestList" is registered for version "certificates.k8s.io/v1" in scheme "k8s.io/kubectl/pkg/scheme/scheme.go:28"
E0731 15:30:32.382441 1601576 observe.go:465] observer: Failed to list <unspecified>: no kind "CertificateSigningRequestList" is registered for version "certificates.k8s.io/v1" in scheme "k8s.io/kubectl/pkg/scheme/scheme.go:28"
E0731 15:30:33.976176 1601576 observe.go:465] observer: Failed to list <unspecified>: no kind "CertificateSigningRequestList" is registered for version "certificates.k8s.io/v1" in scheme "k8s.io/kubectl/pkg/scheme/scheme.go:28"
E0731 15:30:35.572281 1601576 observe.go:465] observer: Failed to list <unspecified>: no kind "CertificateSigningRequestList" is registered for version "certificates.k8s.io/v1" in scheme "k8s.io/kubectl/pkg/scheme/scheme.go:28"
E0731 15:30:37.165401 1601576 observe.go:465] observer: Failed to list <unspecified>: no kind "CertificateSigningRequestList" is registered for version "certificates.k8s.io/v1" in scheme "k8s.io/kubectl/pkg/scheme/scheme.go:28"
E0731 15:30:38.761262 1601576 observe.go:465] observer: Failed to list <unspecified>: no kind "CertificateSigningRequestList" is registered for version "certificates.k8s.io/v1" in scheme "k8s.io/kubectl/pkg/scheme/scheme.go:28"
F0731 15:30:38.761298 1601576 observe.go:468] Maximum list errors of 20 reached, exiting


Expected results:
Should work well.

Additional info:
Work well with `oc adm certificate approve xxx` directly.