Change the way trychange.py sends the try jobs.

Change the way trychange.py sends the try jobs.

Now accepts duplicate keys, it simplifies parsing, like when multiple bots are
used, each with their own test filter. This enables full test specification per builder.

R=petermayo@chromium.org
BUG=
TEST=


Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=121842

[M-A Ruel, 2012-02-10 21:20:13]

$ git try --bot linux_rel:jingle_unittests --bot linux:crypto_unittests
--testfilter=dbus_unittests

resulted in the svn commit:
----
r144305 | maruel@chromium.org | 2012-02-10 16:18:30 -0500 (ven 10 fév 2012) | 10
lignes

user=maruel
name=foo#0a5fb7
email=maruel@chromium.org
root=src
issue=8527028
patchset=1
bot=linux_rel:jingle_unittests
bot=linux:crypto_unittests
testfilter=dbus_unittests
----

and builds:
http://build.chromium.org/p/tryserver.chromium/builders/linux_rel/builds/1025
testfilter: [u'jingle_unittests', u'dbus_unittests']

http://build.chromium.org/p/tryserver.chromium/builders/linux/builds/73
testfilter: [u'crypto_unittests', u'dbus_unittests']

Awesome?

[M-A Ruel, 2012-02-10 21:24:43]

For completeness, I tried:
$ git try --bot linux_rel:jingle_unittests --bot linux_rel:crypto_unittests
--testfilter=dbus_unittests

Resulting build:
http://build.chromium.org/p/tryserver.chromium/builders/linux_rel/builds/1026
testfilter: [u'jingle_unittests', u'crypto_unittests', u'dbus_unittests']

So it's all good. Duplicate builders with tests are correctly added together.

Note that if a test is specified two times, it will be listed two times in
testfilter on the try server. It's harmless but could become annoying. I think
it's better to fix it server side by using a set() instead of a list but that's
not urgent.

[Marc-Antoine Ruel (Google), 2012-02-14 00:48:57]

Ping?

[Peter Mayo, 2012-02-14 03:33:49]

lgtm

[commit-bot: I haz the power, 2012-02-14 03:46:02]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/maruel@chromium.org/9380022/1

[commit-bot: I haz the power, 2012-02-14 03:52:13]

Change committed as 121842