Issue #131 Tag cluster-kube-apiserver-operator image

We need the image to recover the cert in case it expire, if we don't
tag it properly then we need to do it on the CRC side and that require
the internet connectivity to fetch the hash for KAO image. Now we can
directly use `openshift/cert-recovery` tag without fetching it from the
release payload.

Proper Bash check for missing value

Changing a check for OPENSHIFT_VERSION variable that works even
if that variable isn't declared.

cut 4.1.14

cut 4.1.13

cut 4.1.11

cut 4.1.9

cut 4.1.6

cut 4.1.3