enhance passwords management and add default options

tasks/configure.yml

@@ -12,11 +12,20 @@
     state: started
     enabled: yes
 
+- name: percona | configure root .my.cnf
+  template:
+    src: root.my.cnf.j2
+    dest: /root/.my.cnf
+    mode: '0600'
+    owner: root
+    group: root
+
 - name: percona | update MySQL root password
   mysql_user:
     name: root
     host: localhost
-    password: "{{ percona_root_password }}"
+    plugin: caching_sha2_password
+    plugin_auth_string: "{{ percona_root_password }}"
+    salt: "{{ percona_caching_sha2_password_salt }}"
     login_unix_socket: /var/run/mysqld/mysqld.sock
-    priv: "*.*:ALL,GRANT"
-  ignore_errors: true  # In case password is already set and socket auth is disabled
+  ignore_errors: true  # In case password is already set and socket auth is disabled