Rietveld: don't email on "Dry Run: CQ is trying da patch"

Rietveld: don't email on "Dry Run: CQ is trying da patch"

Before Rietveld sent emails to authors and whoever triggered CQ dry run.
With this CL, no email will be sent when Dry Run starts.
The email when Dry Run ends will still be sent.

BUG=626427

[tandrii(chromium), 2016-07-08 14:43:03]

Description was changed from

==========
Rietveld: don't send emails on CQ dry run messages.

Before Rietveld sent emails to authors and whoever triggered CQ dry run.
With this CL, no email will be sent.

BUG=626427
==========

to

==========
Rietveld: don't email on "Dry Run: CQ is trying da patch"

Before Rietveld sent emails to authors and whoever triggered CQ dry run.
With this CL, no email will be sent when Dry Run starts.
The email when Dry Run ends will still be sent.

BUG=626427
==========

[tandrii(chromium), 2016-07-08 14:43:03]

tandrii@chromium.org changed reviewers:
+ sergiyb@chromium.org

[tandrii(chromium), 2016-07-08 14:43:11]

PTAL

[tandrii(chromium), 2016-07-08 15:09:52]

another great idea from Sergiyb resulted in
https://codereview.chromium.org/2137553002

[Sergiy Byelozyorov, 2016-07-11 19:33:27]

Are you planning to update this CL or should we just close it?

[tandrii(chromium), 2016-07-12 12:58:12]

On 2016/07/11 19:33:27, Sergiy Byelozyorov wrote:
> Are you planning to update this CL or should we just close it?

closed it.