Define GPG key for repo

With update of GPG key that was made in [1] we broke upgrade path,
since new key is not being updated by gpg_key module and it results
with OK state despite new content it placed to GPG keyfile

With that patch we replace usage of gpg_key with defining gpgkey
option for yum_repository, which treats it way more properly and
fixes upgrade path as well as simplifying overall flow.

[1] https://review.opendev.org/c/openstack/openstack-ansible-galera_server/+/879150

Change-Id: Ie322e0e69c5e7b2acd55bc18cf23fed1fa8f4f17

tasks/galera_install_dnf.yml

@@ -92,16 +92,6 @@
     mode: '0644'
   with_items: "{{ galera_gpg_keys }}"
 
-- name: Install gpg keys
-  rpm_key: "{{ key }}"
-  with_items: "{{ galera_gpg_keys }}"
-  loop_control:
-    loop_var: key
-  register: _add_yum_keys
-  until: _add_yum_keys is success
-  retries: 5
-  delay: 2
-
 - name: Add galera repo
   yum_repository:
     name: "{{ galera_repo.name }}"

vars/redhat.yml

@@ -65,6 +65,7 @@ _galera_repo:
   name: MariaDB
   description: "MariaDB Repo"
   baseurl: "{{ galera_repo_url }}"
+  gpgkey: "file://{{ galera_gpg_keys | map(attribute='key') | join('file://') }}"
 
 galera_wsrep_provider: "/usr/lib64/galera-4/libgalera_smm.so"