I'm looking for the cloud team which I think picked up the machine-approver. It is not owned by auth. Even with a valid bootstrap credential (see https://bugzilla.redhat.com/show_bug.cgi?id=1735180 and https://github.com/openshift/machine-config-operator/pull/1027), the CSR is never approved unless the machine-approver is already running. This isn't always the case, consider resuming a cluster's VMs. The current workaround is to manually approve. I find this to be a reasonable short-term workaround, but it probably needs to be documented.
this is the command I used. `oc get csr -oname | xargs oc adm certificate approve`
*** This bug has been marked as a duplicate of bug 1737611 ***