[update] Stop control plane check during split variant post-services tests

In the split update variant, the continuous control plane check
runs in the background creating and deleting VMs in a loop. When
post-services tests (tobiko) execute between the services and system
update phases, they discover transient VMs in BUILD state and fail
with HTTP 409 conflicts.

Stop the control plane check before running the post-services tests
and restart it afterward so it continues monitoring during the system
update phase. The ping test is left running since it only pings an
existing VM and does not create new resources.

Closes: OSPCIX-1381
Signed-off-by: Vito Castellano <vcastell@redhat.com>

Author: Valkyrie00

roles/update/tasks/update_variant_split.yml

@@ -20,6 +20,13 @@
       {{ cifmw_update_artifacts_basedir }}/update_event.sh
       Services update sequence complete
 
+- name: Stop the continuous control plane test before post-services tests
+  when:
+    - cifmw_update_control_plane_check | bool
+    - not cifmw_update_run_dryrun | bool
+  ansible.builtin.command: |
+    {{ cifmw_update_artifacts_basedir }}/control_plane_test_stop.sh
+
 - name: Run tests after Services update
   vars:
     cifmw_test_operator_artifacts_basedir: "{{ cifmw_basedir }}/tests/test_operator_update"
@@ -29,6 +36,13 @@
     tasks_from: run_tests.yml
   when: cifmw_run_tests | default(false) | bool
 
+- name: Restart the continuous control plane test after post-services tests
+  when:
+    - cifmw_update_control_plane_check | bool
+    - not cifmw_update_run_dryrun | bool
+  ansible.builtin.command: |
+    {{ cifmw_update_artifacts_basedir }}/control_plane_test_start.sh
+
 - name: Set update step to Starting the system update sequence
   ansible.builtin.command:
     cmd: >