Merge pull request #5353 from mgugino-upstream-stage/public_hostname_check

Add openshift_public_hostname length check

playbooks/common/openshift-cluster/sanity_checks.yml

@@ -45,3 +45,7 @@
   - fail:
       msg: openshift_hostname must be 63 characters or less
     when: openshift_hostname is defined and openshift_hostname | length > 63
+
+  - fail:
+      msg: openshift_public_hostname must be 63 characters or less
+    when: openshift_public_hostname is defined and openshift_public_hostname | length > 63