Move FIPS jobs to experimental and periodic queue

Change-Id: Id8d29ac00102c958ddc6f8d0c217fb11282a7d08

Author: afaranha

.zuul.yaml

@@ -689,9 +689,6 @@
             voting: false
         - tempest-integrated-compute-centos-8-stream:
             irrelevant-files: *nova-base-irrelevant-files
-        - tempest-centos8-stream-fips:
-            irrelevant-files: *nova-base-irrelevant-files
-            voting: false
     gate:
       jobs:
         - nova-live-migration
@@ -754,3 +751,9 @@
             irrelevant-files: *nova-base-irrelevant-files
         - devstack-tobiko-nova:
             irrelevant-files: *nova-base-irrelevant-files
+        - tempest-centos8-stream-fips:
+            irrelevant-files: *nova-base-irrelevant-files
+    periodic:
+      jobs:
+        - tempest-centos8-stream-fips:
+            branches: master