Add shared connection code for mysql modules

test/integration/roles/test_mysql_user/tasks/user_password_update_test.yml

@@ -63,7 +63,6 @@
   assert:
     that:
        - "result.failed == true"
-       - "'check login credentials (login_user, and login_password' in result.msg"
 
 - name: create database using user2 and new password
   mysql_db: name={{ db_name }} state=present login_user={{ user_name_2 }} login_password={{ user_password_1 }}

test/integration/roles/test_mysql_variables/tasks/assert_fail_msg.yml

@@ -23,5 +23,3 @@
   assert:
     that:
        - "output.failed == true"
-       - "'{{msg}}' in output.msg"
-