Include project-templates from projects

Allow project-templates defined in a project to be included.
This particularly applies to infrawatch, which has STF components, each
in their own repo, but which use the same set of jobs for testing.

Other groups of project may also want to define custom project templates
as well e.g. a team may want to have integration tests for a sub-set of
components.

Related: infrawatch/service-telemetry-operator#514
Change-Id: Ia6284fa3de81a464440dc3583ad63e38b7243169

zuul/rdo.yaml

@@ -1234,14 +1234,9 @@
         # only affect those repos. they are not config
         # repos and cannot shadow other jobs, projects
         # or nodesets.
-        - openstack-k8s-operators/ci-framework:
-            include:
-            - job
-            - project
-            - nodeset
-            - project-template
-        - include: [job, project, nodeset]
+        - include: [job, project, nodeset, project-template]
           projects:
+          - openstack-k8s-operators/ci-framework
           - openstack-k8s-operators/tcib
           - openstack-k8s-operators/nova-operator
           - openstack-k8s-operators/placement-operator