DEV-1058 bugfix backup process

- hard coded gpg key

group_vars/all/backup.yml

@@ -1,2 +1,3 @@
 ---
 backup_communication_keys_repository: "https://{{ gitea_admin_username | urlencode() }}:{{ gitea_admin_password | urlencode() }}@{{ shared_service_hostname_gitea }}/gitea-admin/communication-keys.git"
+backup_communication_keys_stage_gpg_key: "smardigo_automation_{{ stage }}.gpg.pub"

group_vars/stage_demompmx/backup.yml

@@ -0,0 +1,3 @@
+---
+# TODO use stage specific gpg key
+backup_communication_keys_stage_gpg_key: "smardigo_automation_prodnso.gpg.pub"

roles/maria/tasks/_create_backup.yml

@@ -36,7 +36,7 @@
 # there is no ansible gpg module already in place
 # linting violation needs to be whitelisted
     - name: "Importing stage specific automation gpg-key" # noqa command-instead-of-shell
-      shell: 'gpg --import {{ tempdir.path }}/smardigo_automation_{{ stage }}.gpg.pub'
+      shell: 'gpg --import {{ tempdir.path }}/{{ backup_communication_keys_stage_gpg_key }}'
 
 # there is no ansible module already in place for (mariabackup|gpg)
 # so using shell module

roles/postgres/tasks/_create_backup.yml

@@ -33,7 +33,7 @@
 # there is no ansible gpg module already in place
 # linting violation needs to be whitelisted
     - name: "Importing stage specific automation gpg-key" # noqa command-instead-of-shell
-      shell: 'gpg --import {{ tempdir.path }}/smardigo_automation_{{ stage }}.gpg.pub'
+      shell: 'gpg --import {{ tempdir.path }}/{{ backup_communication_keys_stage_gpg_key }}'
 
 # there is no ansible module already in place for (pg_basebackup|gpg)
 # so using shell module