Disable skip-level jobs in check queue

During this release (non-SLURP), these jobs are now executed in the
"periodic" and "experimental" queues, but not the "check" queue.

Change-Id: If317cc0292e26339475192ce3bcca49ac5033e88

zuul.d/grenade.yaml

@@ -379,7 +379,7 @@
     vars:
       # Move this forward when master changes to a new skip-level-allowed
       # target release. Right now, this is Antelope (2023.1) because master is
-      # Caracal (2024.1).
+      # Dalmation (2024.2).
       # When master is E (2025.1), this should become Caracal (2024.1),
       # and so forth.
       grenade_from_branch: stable/2023.1
@@ -395,7 +395,7 @@
     vars:
       # Move this forward when master changes to a new skip-level-allowed
       # target release. Right now, this is Antelope (2023.1) because master is
-      # Caracal (2024.1).
+      # Dalmation (2024.2).
       # When master is E (2025.1), this should become Caracal (2024.1),
       # and so forth.
       grenade_from_branch: stable/2023.1

zuul.d/job-templates.yaml

@@ -128,15 +128,15 @@
     name: neutron-skip-level-jobs
     # During a SLURP release, these jobs are executed in the check queue,
     # otherwise periodic/experimental. SLURP releases are 2024.1, 2025.1, etc.
-    check:
+    #check:
+    #  jobs:
+    #    - neutron-ovs-grenade-multinode-skip-level
+    #    - neutron-ovn-grenade-multinode-skip-level
+    periodic:
+      jobs:
+        - neutron-ovs-grenade-multinode-skip-level
+        - neutron-ovn-grenade-multinode-skip-level
+    experimental:
       jobs:
         - neutron-ovs-grenade-multinode-skip-level
         - neutron-ovn-grenade-multinode-skip-level
-    #periodic:
-    #  jobs:
-    #    - neutron-ovs-grenade-multinode-skip-level
-    #    - neutron-ovn-grenade-multinode-skip-level
-    #experimental:
-    #  jobs:
-    #    - neutron-ovs-grenade-multinode-skip-level
-    #    - neutron-ovn-grenade-multinode-skip-level