Add more Observatory related paths to WATCHLISTS and add rmacnak@

WATCHLISTS

Index: WATCHLISTS
diff --git a/WATCHLISTS b/WATCHLISTS
index 1bbea0d7f94d095672eeafdd56bafaeceda29f95..762e901a1709ff45a2e8a671e37914b1ebf69ed4 100644
--- a/WATCHLISTS
+++ b/WATCHLISTS
@@ -14,14 +14,18 @@
       'filepath': 'tools/',
     },
     'observatory': {
-      'filepath': 'runtime/observatory/',
+      'filepath': 'runtime/bin/vmservice/' \
+                  '|runtime/bin/vmservice*' \
+                  '|runtime/observatory/' \
+                  '|runtime/vm/service/' \
+                  '|runtime/vm/service*'
     },
   },
 
   'WATCHLISTS': {
     'runtime': ['vm-dev@dartlang.org'],
     'tools': ['ricow@google.com'],
-    'observatory': ['johnmccutchan@google.com', 'turnidge@google.com'],
+    'observatory': ['johnmccutchan@google.com', 'turnidge@google.com', 'rmacnak@google.com'],
   },
 }