[PR #5965/0ef80569 backport][stable-6] Add attributes to more modules (1/4) (#6022)

Add attributes to more modules (1/4) (#5965)

* Add attributes to more modules.

* Apply suggestions from code review.

Co-authored-by: Kristian Heljas <11139388+kristianheljas@users.noreply.github.com>

---------

Co-authored-by: Kristian Heljas <11139388+kristianheljas@users.noreply.github.com>
(cherry picked from commit 0ef805699d)

Co-authored-by: Felix Fontein <felix@fontein.de>

plugins/modules/omapi_host.py

@@ -18,7 +18,14 @@ description: Manage OMAPI hosts into compatible DHCPd servers
 requirements:
   - pypureomapi
 author:
-- Loic Blot (@nerzhul)
+  - Loic Blot (@nerzhul)
+extends_documentation_fragment:
+  - community.general.attributes
+attributes:
+    check_mode:
+        support: none
+    diff_mode:
+        support: none
 options:
     state:
         description: