[PR #427/0a68bb27 backport][stable-2] CI is changed (#429)

* Is changed (#427)

* Refactor tests to use "is" and "is not" changed

* Refactor tests to use is succeeded or is failed

* Reformat indentation

* Add filter "bool" to prevent issues

(cherry picked from commit 0a68bb270f)

* Fix error message verification

I don't know why this works on main, but in stable-1, the error message
is "invalid privileges string: Invalid privileges specified:
frozenset({'INVALID'})"

* Add filter for test that won't work with mariadb

* Add test databases cleanup

* Backport small diff from main

tests/integration/targets/test_mysql_user/tasks/issue-64560.yaml

@@ -17,7 +17,9 @@
       register: result
 
     - name: assert root password is changed
-      assert: { that: "result.changed == true" }
+      assert:
+        that:
+          - result is changed
 
     - name: Set root password again
       mysql_user:
@@ -31,7 +33,9 @@
       register: result
 
     - name: Assert root password is not changed
-      assert: { that: "result.changed == false" }
+      assert:
+        that:
+          - result is not changed
 
     - name: Set root password again
       mysql_user: