Add mandatory requires_ansible version to metadata

Disable ansible-test since it's broken in 2.11[1]

[1] https://github.com/ansible/ansible/issues/75353
Change-Id: Idd2f99ddfe507b5b02de206c1f8c75692d6a84a2

.zuul.yaml

@@ -276,7 +276,7 @@
     nodeset: ubuntu-bionic
     description: |
       Run openstack collections linter tests using the 2.11 branch of ansible
-    voting: true
+    voting: false
     required-projects:
       - name: github.com/ansible/ansible
         override-checkout: stable-2.11
@@ -370,7 +370,7 @@
             dependencies: &deps_unit_lint
               - tox-pep8
               - openstack-tox-linters-ansible-2.9
-              - openstack-tox-linters-ansible-2.11
+              # - openstack-tox-linters-ansible-2.11
 
         - ansible-collections-openstack-functional-devstack-releases:
             dependencies: *deps_unit_lint
@@ -413,7 +413,7 @@
     gate:
       jobs:
         - tox-pep8
-        - openstack-tox-linters-ansible-2.11
+        # - openstack-tox-linters-ansible-2.11
         - openstack-tox-linters-ansible-2.9
         - ansible-collections-openstack-functional-devstack
         - ansible-collections-openstack-functional-devstack-releases

meta/runtime.yml

@@ -1,3 +1,4 @@
+requires_ansible: ">=2.8"
 action_groups:
   openstack:
     - address_scope