[PR #9898/6e384a1c backport][stable-10] Add support for addressing subgroups by paths to the keycloak_user module (#10049)

Add support for addressing subgroups by paths to the keycloak_user module (#9898)

* Add support for addressing subgroups by paths to the keycloak_user module (issue #9647)

* Apply suggestions from code review.

Co-authored-by: Alexei Znamensky <103110+russoz@users.noreply.github.com>

---------

Co-authored-by: Felix Fontein <felix@fontein.de>
Co-authored-by: Alexei Znamensky <103110+russoz@users.noreply.github.com>
(cherry picked from commit 6e384a1c6a)

Co-authored-by: Christian Schlichtherle <christian@schlichtherle.de>

changelogs/fragments/9898-keycloak_user-supports-subgroups.yaml

@@ -0,0 +1,9 @@
+minor_changes:
+  - keycloak module_utils - user groups can now be referenced by their name, like ``staff``, or their path, like
+    ``/staff/engineering``.
+    The path syntax allows users to reference subgroups, which is not possible otherwise
+    (https://github.com/ansible-collections/community.general/pull/9898).
+  - keycloak_user module - user groups can now be referenced by their name, like ``staff``, or their path, like
+    ``/staff/engineering``.
+    The path syntax allows users to reference subgroups, which is not possible otherwise
+    (https://github.com/ansible-collections/community.general/pull/9898).