feat(gitlab_operator): update runner allowed_pull_policies

Author: jon-nfc

manifests/gitlab-operator/components/runner/ConfigMap.yaml

@@ -14,6 +14,7 @@ data:
 
       [runners.kubernetes]
         pull_policy = "if-not-present"
+        allowed_pull_policies = ["always", "if-not-present", "never"]
 
         cpu_limit = "1000m"
         cpu_request = "10m"