Make glance-secure-rbac-protection-functional job non-voting

Tempest change [1] has broken glance srbac tempest tests, so
in order to unblock the gate we need to turn the job non-voting and
once we fix those tests we will re-enable the same.

[1] https://review.opendev.org/c/openstack/tempest/+/871018

Change-Id: Ibbfd8904b3a87b870ed8cde26245176c5b8e74aa

Author: konan-abhi

.zuul.yaml

@@ -347,7 +347,8 @@
             irrelevant-files: *tempest-irrelevant-files
         - nova-ceph-multistore:
             irrelevant-files: *tempest-irrelevant-files
-        - glance-secure-rbac-protection-functional
+        - glance-secure-rbac-protection-functional:
+            voting: false
 
     gate:
       jobs:
@@ -369,7 +370,8 @@
             irrelevant-files: *tempest-irrelevant-files
         - nova-ceph-multistore:
             irrelevant-files: *tempest-irrelevant-files
-        - glance-secure-rbac-protection-functional
+        - glance-secure-rbac-protection-functional:
+            voting: false
     experimental:
       jobs:
         - glance-tox-py39-glance_store-tips