mysql_role: don't add members to a role when creating the role and "detach_members: true" is set (#367)

* mysql_role: don't add members to a role when creating the role and "detach_members: true" is set, add integration test

* add changelog fragment

* mysql_role: add author betanummeric

* Update changelogs/fragments/367-mysql_role-fix-deatch-members.yml

Co-authored-by: Andrew Klychkov <aaklychkov@mail.ru>

Co-authored-by: Felix Hamme <felix.hamme@ionos.com>
Co-authored-by: Andrew Klychkov <aaklychkov@mail.ru>

tests/integration/targets/test_mysql_role/defaults/main.yml

@@ -15,3 +15,4 @@ nonexistent: user3
 role0: role0
 role1: role1
 role2: role2
+role3: role3

tests/integration/targets/test_mysql_role/tasks/mysql_role_initial.yml

@@ -1248,6 +1248,32 @@
       that:
       - result is not changed
 
+  - name: '"detach" users when creating a new role'
+    <<: *task_params
+    mysql_role:
+      <<: *mysql_params
+      name: '{{ role3 }}'
+      state: present
+      detach_members: yes
+      members:
+        - '{{ user1 }}@localhost'
+
+  - name: Check the role was created
+    assert:
+      that:
+        - result is changed
+
+  - name: Check grants
+    <<: *task_params
+    mysql_query:
+      <<: *mysql_params
+      query: "SHOW GRANTS FOR {{ user1 }}@localhost"
+
+  - name: asssert detach_members did not add a user to the role
+    assert:
+      that:
+        - "'{{ role3 }}' not in result.query_result.0.0['Grants for {{ user1 }}@localhost']"
+
   # ##########
   # Test privs
   # ##########
@@ -1561,3 +1587,4 @@
     loop:
     - '{{ role0 }}'
     - test
+    - '{{ role3 }}'