Make content-provider depend on openstack-tox-linters in check

Part of a wider CI optimization at [1] this makes the content
provider job in the check layout depend on openstack-tox-linters.

Also added to the multinode-branchful template since it is used
only in tq/tqe and they both already have the linters job.

[1] https://review.opendev.org/q/topic:tripleo-ci-reduce

Change-Id: Id70d5724a26abb0042cd8219c68aa194612147a1

zuul.d/layout.yaml

@@ -33,6 +33,9 @@
             vars:
               tox_environment:
                 PYTEST_REQPASS: 84
+        - tripleo-ci-centos-8-content-provider:
+            dependencies:
+              - openstack-tox-linters
     gate:
       queue: tripleo
       jobs:

zuul.d/multinode-jobs.yaml

@@ -330,11 +330,22 @@
     name: tripleo-multinode-branchful
     check:
       jobs:
-        - tripleo-ci-centos-8-content-provider-victoria
-        - tripleo-ci-centos-8-content-provider-ussuri
-        - tripleo-ci-centos-8-content-provider-train
-        - tripleo-ci-centos-7-content-provider-train
-        - tripleo-ci-centos-7-content-provider-queens
+        - openstack-tox-linters
+        - tripleo-ci-centos-8-content-provider-victoria:
+            dependencies:
+              - openstack-tox-linters
+        - tripleo-ci-centos-8-content-provider-ussuri:
+            dependencies:
+              - openstack-tox-linters
+        - tripleo-ci-centos-8-content-provider-train:
+            dependencies:
+              - openstack-tox-linters
+        - tripleo-ci-centos-7-content-provider-train:
+            dependencies:
+              - openstack-tox-linters
+        - tripleo-ci-centos-7-content-provider-queens:
+            dependencies:
+              - openstack-tox-linters
         - tripleo-ci-centos-8-containers-multinode-victoria: &multi_consumer_job_victoria
             irrelevant-files: *multinode_ignored
             vars: *multi_consumer_vars