Workaround the olso master testing job

Applying the same workaround as Sean did for
neutron oslo master job. Details are in

- https://review.opendev.org/c/openstack/neutron/+/948561

Also, adding tempest-full-oslo-master in experimental
pipeline to run it on demand.

Related-Bug: #2109592
Change-Id: I8edbd12c84d8978f2d43ee2aa80bb421c221cdbc
diff --git a/zuul.d/project.yaml b/zuul.d/project.yaml
index 122b476..f1c6faa 100644
--- a/zuul.d/project.yaml
+++ b/zuul.d/project.yaml
@@ -157,6 +157,7 @@
       jobs:
         - nova-multi-cell
         - tempest-with-latest-microversion
+        - tempest-full-oslo-master
         - tempest-stestr-master
         - tempest-cinder-v2-api:
             irrelevant-files: *tempest-irrelevant-files