Add ironic-grenade-skip-level Job

Change-Id: I359ac822f2fe39b38f29a47fd2e71c8c91476030

zuul.d/ironic-jobs.yaml

@@ -1113,3 +1113,12 @@
       # important to set the working dir to the Ironic checkout.
       zuul_work_dir: "{{ ansible_user_dir }}/{{ zuul.projects['opendev.org/openstack/ironic'].src_dir }}"
 
+- job:
+    name: ironic-grenade-skip-level
+    parent: ironic-grenade
+    vars:
+      grenade_from_branch: stable/zed
+      grenade_to_branch: master
+      grenade_localrc:
+        # NOTE(iurygregory): This is required for skip upgrades.
+        NOVA_ENABLE_UPGRADE_WORKAROUND: True

zuul.d/project.yaml

@@ -18,6 +18,8 @@
         - ironic-tempest-functional-rbac-scope-enforced:
             voting: false
         - ironic-grenade
+        - ironic-grenade-skip-level:
+            voting: false
         - ironic-standalone
         - ironic-standalone-redfish
         - ironic-tempest-bios-redfish-pxe