Description of problem:

Running the extended test "The bootstrap user should successfully login with password decoded from kubeadmin secret [Suite:openshift/conformance/parallel]"
on Azure breaks kubeadmin every time.

The test is supposed to restore the kube-system/kubeadmin secret back to its former state after the test but for some reason on Azure it does not.   The test works fine on AWS

Version-Release number of selected component (if applicable):  
cluster:  4.2.0-0.nightly-2019-07-17-083655
openshift-tests: from the same build


How reproducible: Always


Steps to Reproduce:
1.  Install an IPI standard cluster on Azure
2.  KUBECONFIG=/root/.kube/config 
3.  openshift-tests run-test  "The bootstrap user should successfully login with password decoded from kubeadmin secret [Suite:openshift/conformance/parallel]"

Actual results:

The test fails with a 401 Unauthorized after the attempt to restore the kubeadmin secret.   Login as kubeadmin after this is impossible

Expected results:

Test passes

Additional info:

kubeadmin secret before running the test:

apiVersion: v1
data:
  kubeadmin: JDJhJDEwJFZMOFVBbDFPbWxjcjNNVDgwc2NLSi44SkVhaDNuQ05zU0JOUlIzWElySG5aWXRjTU0ycG0u
kind: Secret
metadata:
  creationTimestamp: "2019-07-17T20:22:25Z"
  name: kubeadmin
  namespace: kube-system
  resourceVersion: "52"
  selfLink: /api/v1/namespaces/kube-system/secrets/kubeadmin
  uid: 9767c691-a8d0-11e9-9616-000d3a945d2f
type: Opaque

kubeadmin secret after running the test:

apiVersion: v1
data:
  kubeadmin: JDJhJDEwJERpdUJLdkxYcnFGdnByMnZzZTJtRk9sQUpFT0c4eFUwZGlXaEV2QS9RQ3RZdXBscXN6cDAu
kind: Secret
metadata:
  creationTimestamp: "2019-07-17T20:22:25Z"
  name: kubeadmin
  namespace: kube-system
  resourceVersion: "308166"
  selfLink: /api/v1/namespaces/kube-system/secrets/kubeadmin
  uid: 9767c691-a8d0-11e9-9616-000d3a945d2f
type: Opaque


When run on AWS the before/after are identical.