Autotest: Update RPC, Scheduler and AFE to use timeout_mins.

Now that timeout_mins is in the database, we need to update the
infrastructure to display and utilize timeout_mins rather than
timeout.

The scheduler now aborts based off of timeout_mins.

The afe displays/creates jobs using timeout_mins rather than timeout.

The RPC's take in timeout and timeout_min depending on what is inputted
to the system. Note the value supplied for timeout_mins takes precedence
over timeout.

BUG=chromium:221264
TEST=Created job through AFE, run_suite with smoke suite, job_unittest
and rpc_unittests.
DEPLOY=apache, afe, scheduler

CQ-DEPEND=I09f8b6023a31dcef37e98c298dc0d63b37bc0a9e

Change-Id: I838cd1ff85a2ce6bd49fe96bf18fd82be608c758
Reviewed-on: https://chromium-review.googlesource.com/176605
Reviewed-by: Simran Basi <sbasi@chromium.org>
Commit-Queue: Simran Basi <sbasi@chromium.org>
Tested-by: Simran Basi <sbasi@chromium.org>
13 files changed