Transition watcher project to DPL

There are multiple organizations that my be reigniting interest in
watcher recently. Since it is passing tests, has good coverage, and
seems to still work, we are moving it to DPL with liaisons that are
present to give some more time for evaluation and contributors to
show up.

Change-Id: Ifd8418dc68f7447a208fbf0073b481ecf7504fb3

reference/projects.yaml

@@ -2638,10 +2638,27 @@ vitrage:
       repos:
         - openstack/xstatic-moment-timezone
 watcher:
-  ptl:
+  leadership_type: distributed
-    name: APPOINTMENT NEEDED
+  liaisons:
-    irc: No nick supplied
+    release:
-    email: example@example.org
+      - name: Dan Smith
+        irc: dansmith
+        email: dms@danplanet.com
+    tact-sig:
+      - name: Dan Smith
+        irc: dansmith
+        email: dms@danplanet.com
+    security:
+      - name: Dan Smith
+        irc: dansmith
+        email: dms@danplanet.com
+    tc-liaison:
+      - name: Ghanshyam Mann
+        irc: gmann
+        email: gmann@ghanshyammann.com
+      - name: Dan Smith
+        irc: dansmith
+        email: dms@danplanet.com
   appointed:
     - zed
   irc-channel: openstack-watcher