my_activity.py: Add brillo bug tracker.

BUG=brillo:90
TEST=./my_activity.py shows brillo bugs.

Review URL: https://codereview.chromium.org/891543002

git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@293912 0039d316-1c4b-4281-b951-d872f2087c98

my_activity.py

@@ -94,6 +94,10 @@ gerrit_instances = [
 ]
 
 google_code_projects = [
+  {
+    'name': 'brillo',
+    'shorturl': 'brbug.com',
+  },
   {
     'name': 'chromium',
     'shorturl': 'crbug.com',