Extend checks in diff as a workaround for type confusion with the Director API (#278)

* Fixes #277

* Update code, add comment

---------

Co-authored-by: Konstantin Kelemen <kkk@servers.com>

Author: konstantin-kelemen

plugins/module_utils/icinga.py

@@ -262,6 +262,10 @@ def diff(self, find_by="name"):
                 diff["before"][key] = "{val}".format(val=value)
                 diff["after"][key] = "{val}".format(val=data_from_task[key])
 
+        # workaround for type confusion in API, remove when https://github.com/telekom-mms/ansible-collection-icinga-director/issues/285 is solved
+        if diff["before"] == diff["after"]:
+            return {}
+
         return diff
 
     def update(self, state):