flowdock module: deprecation (#6930)

* flowdock module: deprecation

* add changelog frag

changelogs/fragments/6930-deprecate-flowdock.yml

@@ -0,0 +1,2 @@
+deprecated_features:
+  - flowdock - module relies entirely on no longer responsive API endpoints, and it will be removed in community.general 9.0.0 (https://github.com/ansible-collections/community.general/pull/6930).

meta/runtime.yml

@@ -804,6 +804,10 @@ plugin_routing:
         warning_text: You are using an internal name to access the community.general.flatpak_remote
           modules. This has never been supported or documented, and will stop working
           in community.general 9.0.0.
+    flowdock:
+      deprecation:
+        removal_version: 9.0.0
+        warning_text: This module relies on HTTPS APIs that do not exist anymore and there is no clear path to update.
     notification.flowdock:
       redirect: community.general.flowdock
       deprecation:

plugins/modules/flowdock.py

@@ -11,6 +11,12 @@ __metaclass__ = type
 
 DOCUMENTATION = '''
 ---
+
+deprecated:
+  removed_in: 9.0.0
+  why: the endpoints this module relies on do not exist any more and do not resolve to IPs in DNS.
+  alternative: no known alternative at this point
+
 module: flowdock
 author: "Matt Coddington (@mcodd)"
 short_description: Send a message to a flowdock