replace devstack-plugin-ceph-tempest-py3

this change replaces devstack-plugin-ceph-tempest-py3
with nova-ceph-multistore to add extra coverage of image
conversion and multi store.

devstack-plugin-ceph-tempest-py3 was disabled in gate 3 years
ago in Ibcaf1bce80521e05d76199ddebccb33488360644 as a temporary
measure. we never got around to re-enabling it so this change
also makes sure nova-ceph-multistore is run in gate to
have a ceph job in gate.

nova-ceph-multistore is removed from experimental as we do
not need the duplication since it is now in check

Related-Bug: #2092534
Change-Id: If0138b080a2222c95ae3c6d92221dfa1c8694db0
diff --git a/zuul.d/project.yaml b/zuul.d/project.yaml
index bd21e73..f044e79 100644
--- a/zuul.d/project.yaml
+++ b/zuul.d/project.yaml
@@ -110,8 +110,7 @@
             irrelevant-files: *tempest-irrelevant-files
         - tempest-full-enforce-scope-new-defaults:
             irrelevant-files: *tempest-irrelevant-files
-        - devstack-plugin-ceph-tempest-py3:
-            timeout: 9000
+        - nova-ceph-multistore:
             irrelevant-files: *tempest-irrelevant-files
         - neutron-ovs-grenade-multinode:
             irrelevant-files: *tempest-irrelevant-files
@@ -156,8 +155,8 @@
             irrelevant-files: *tempest-irrelevant-files
         - tempest-full-enforce-scope-new-defaults:
             irrelevant-files: *tempest-irrelevant-files
-        #- devstack-plugin-ceph-tempest-py3:
-        #    irrelevant-files: *tempest-irrelevant-files
+        - nova-ceph-multistore:
+            irrelevant-files: *tempest-irrelevant-files
         - nova-live-migration:
             irrelevant-files: *tempest-irrelevant-files
         - ironic-tempest-bios-ipmi-direct-tinyipa:
@@ -173,8 +172,6 @@
     experimental:
       jobs:
         - nova-multi-cell
-        - nova-ceph-multistore:
-            irrelevant-files: *tempest-irrelevant-files
         - tempest-with-latest-microversion
         - tempest-stestr-master
         - tempest-cinder-v2-api: