[stable-2.11] hostname - add Rocky Linux support (#74545) (#74560)

(cherry picked from commit 2d41e5f99a)

Co-authored-by: Louis Abel <nazunalika@users.noreply.github.com>

changelogs/fragments/support_rocky_linux_hostname.yml

@@ -0,0 +1,2 @@
+bugfixes:
+  - hostname - Add Rocky Linux support

lib/ansible/modules/hostname.py

@@ -1001,6 +1001,12 @@ class PopHostname(Hostname):
     strategy_class = DebianStrategy
 
 
+class RockyHostname(Hostname):
+    platform = 'Linux'
+    distribution = 'Rocky'
+    strategy_class = SystemdStrategy
+
+
 def main():
     module = AnsibleModule(
         argument_spec=dict(