Description of problem:

CI fails to run e2e tests for 3.11

How reproducible:

Always.

Steps to Reproduce:
1. run the e2e-gcp job on the release-3.11 branch

Actual results:

https://prow.svc.ci.openshift.org/view/gcs/origin-ci-test/pr-logs/pull/24837/pull-ci-openshift-origin-release-3.11-e2e-gcp/1036

https://search.svc.ci.openshift.org/?search=oo_masters_to_config&maxAge=48h&context=1&type=bug%2Bjunit&name=&maxMatches=5&maxBytes=20971520&groupBy=job

Expected results:

Green tests.

Additional info:

Evaluate oo_all_hosts --------------------------------------------------- 0.08s
/usr/share/ansible/openshift-ansible/playbooks/init/evaluate_groups.yml:15 ----
openshift_sanitize_inventory : include_tasks ---------------------------- 0.07s
/usr/share/ansible/openshift-ansible/roles/openshift_sanitize_inventory/tasks/main.yml:31 
Failure summary:
  1. Hosts:    35.243.162.60
     Play:     Initialize basic host facts
     Task:     Ensure openshift_master_cluster_hostname is set when deploying multiple masters
     Message:  The conditional check 'groups.oo_masters_to_config | length > 1' failed. The error was: error while evaluating conditional (groups.oo_masters_to_config | length > 1): 'dict object' has no attribute 'oo_masters_to_config'
               
               The error appears to be in '/usr/share/ansible/openshift-ansible/roles/openshift_sanitize_inventory/tasks/main.yml': line 131, column 3, but may
               be elsewhere in the file depending on the exact syntax problem.
               
               The offending line appears to be:
               
               
               - name: Ensure openshift_master_cluster_hostname is set when deploying multiple masters
                 ^ here