Only have the master send emails to developers to HandleApplied.
Only have the master send emails to developers to HandleApplied.

BUG=None
TEST=unittests

Change-Id: I7478f1dff4cfe7119f2124f1f0e89bf689ef7ce4
Reviewed-on: https://gerrit.chromium.org/gerrit/13064
Reviewed-by: Chris Sosa <959d3d631fb6f17f1b07f751372041a1edb210d1@chromium.org>
Tested-by: Chris Sosa <959d3d631fb6f17f1b07f751372041a1edb210d1@chromium.org>

coreos/chromite,coreos/chromite,chadversary/chromiumos.chromite,bpsinc-native/src_third_party_chromite,zhang0137/chromite,coreos/chromite,bpsinc-native/src_third_party_chromite,bpsinc-native/src_third_party_chromite,chadversary/chromiumos.chromite,zhang0137/chromite,zhang0137/chromite