Make master jobs voting again

... because the broken integration job in master has been fixed.

Depends-on: https://review.opendev.org/851670
Change-Id: I9a83d4d7c906e89be93d441a44cd159aa6d694a3

.zuul.yaml

@@ -54,10 +54,8 @@
       - tempest-plugin-jobs
     check:
       jobs:
-        - heat-functional:
-            voting: false
-        - heat-functional-legacy:
-            voting: false
+        - heat-functional
+        - heat-functional-legacy
         - heat-functional-convg-train
         - heat-functional-orig-train
         - heat-functional-ussuri
@@ -66,7 +64,5 @@
     gate:
       queue: heat
       jobs:
-        - heat-functional:
-            voting: false
-        - heat-functional-legacy:
-            voting: false
+        - heat-functional
+        - heat-functional-legacy