Add steps required to run minor update on overcloud

Add steps to multinode-overcloud-update.yml playbook which are required
before running full minor update on overcloud. The prerequisites for
starting overcloud update for tripleo-upgrade are:

- updated dlrn repos definitions on overcloud nodes
- updated containers-prepare-parameter.yaml file on undercloud

Resolves: #2015993
Depends-On: https://review.opendev.org/c/openstack/tripleo-ci/+/880162
Depends-On: https://review.opendev.org/c/openstack/tripleo-quickstart/+/883307

Change-Id: I2829307d1013e96317338eccc7a4b16376fb1d2b

playbooks/multinode-overcloud-update.yml

@@ -1,4 +1,35 @@
 ---
+# the yum repos ALWAYS need to change
+- name: Configure next minor release repository on overcloud nodes
+  hosts: overcloud
+  gather_facts: false
+  tags:
+    - overcloud-update
+  vars:
+    repo_setup_script: "repo-setup-update.sh"
+    repo_setup_log: "repo-setup-update.log"
+    repo_setup_run_update: false
+    # This should not be enabled because the updating of the packages occurs
+    # durring the upgrade process. For general installation it's ok to have
+    # this enabled, but this needs to be disabled for upgrades
+    ib_gating_repo_update: false
+  roles:
+    - role: repo-setup
+      when:
+        - minor_update|default(false)|bool
+        - not mixed_os|default(false)|bool
+
+- name: Update containers file before minor update
+  hosts: undercloud
+  gather_facts: false
+  tags:
+    - overcloud-update
+  roles:
+    - role: container-update
+      when:
+        - minor_update|default(false)|bool
+        - not mixed_os|default(false)|bool
+
 - name: Run tripleo-upgrade role to update the overcloud
   hosts: undercloud
   gather_facts: true