Allow system backup with portieris applied

B&R was not allowed with portieris applied due to its webhook blocking
pods during restore when the local registry was not populated yet.

Several commits (listed as dependencies below) were done in order to
fix this behavior. This reverts commit 888fa40a to allow Portieris
during Backup/Restore.

Closes-Bug: 1890630
Depends-on: https://review.opendev.org/c/starlingx/config/+/806051
Depends-on: https://review.opendev.org/c/starlingx/portieris-armada-app/+/807305
Depends-on: https://review.opendev.org/c/starlingx/portieris-armada-app/+/787625
Change-Id: I3df65a3db412f19068faf92fbea856a83e2e2550
Signed-off-by: Rafael Camargos <RafaelLucas.Camargos@windriver.com>

playbookconfig/src/playbooks/roles/backup/prepare-env/tasks/main.yml

@@ -48,15 +48,6 @@
     msg: "system_mode is not set in /etc/platform/platform.conf"
   when: check_system_mode.rc != 0
 
-- name: Check if portieris application is applied
-  shell: source /etc/platform/openrc; system application-list | grep -i "portieris" | grep -v "uploaded" || true
-  register: portieris_applied
-
-- name: Fail if portieris application is applied
-  fail:
-    msg: "Unable to take backup when portieris application applied"
-  when: portieris_applied.stdout
-
 - name: set system_mode
   set_fact:
     system_mode: "{{ check_system_mode.stdout.split('=')[1] }}"