user - Use -n instead of -N for luseradd on all distros (#75042)

* Use -n instead of -N for luseradd on all distros

Co-authored-by: Chris James <git@etcet.net>

changelogs/fragments/75042-lowercase-dash-n-with-luseradd-on-all-distros.yml

@@ -0,0 +1,2 @@
+bugfixes:
+  - user - fix creating a local user if the user group already exists (https://github.com/ansible/ansible/pull/75042)

lib/ansible/modules/user.py

@@ -693,10 +693,14 @@ class User(object):
             # exists with the same name as the user to prevent
             # errors from useradd trying to create a group when
             # USERGROUPS_ENAB is set in /etc/login.defs.
+            if self.local:
+                # luseradd uses -n instead of -N
+                cmd.append('-n')
+            else:
                 if os.path.exists('/etc/redhat-release'):
                     dist = distro.version()
                     major_release = int(dist.split('.')[0])
-                if major_release <= 5 or self.local:
+                    if major_release <= 5:
                         cmd.append('-n')
                     else:
                         cmd.append('-N')

test/integration/targets/user/tasks/test_local.yml

@@ -86,6 +86,7 @@
     - testgroup3
     - testgroup4
     - testgroup5
+    - local_ansibulluser
   tags:
     - user_test_local_mode
 
@@ -163,6 +164,7 @@
     - testgroup3
     - testgroup4
     - testgroup5
+    - local_ansibulluser
   tags:
     - user_test_local_mode