Make my watchlists easier to filter

Tbr: gsathya@chromium.org
Change-Id: I293e5eb686e2ba92386efb908d3437b2afdd152d
Reviewed-on: https://chromium-review.googlesource.com/1196683Reviewed-by: Adam Klein <adamk@chromium.org>
Cr-Commit-Position: refs/heads/master@{#55533}

WATCHLISTS

@@ -85,7 +85,7 @@
 
   'WATCHLISTS': {
     'api': [
-      'adamk@chromium.org',
+      'adamk+watch@chromium.org',
     ],
     'snapshot': [
       'yangguo@chromium.org',
@@ -120,7 +120,7 @@
       'jbroman+watch@chromium.org',
     ],
     'parser': [
-      'adamk@chromium.org',
+      'adamk+watch@chromium.org',
       'marja+watch@chromium.org',
     ],
     'tracing': [