[autotest] Allow piping of max_runtime_mins to dynamic suites.

The AFE allows users to set the max runtime of a job but this is
not properly passed into dynamic_suites which already has support
for this variable.

This change pipes in max_runtime_mins from create_suite_job to the
suite control file from which dyanmic_suites may use.

Also updates the storagequal suite to pass max_runtime_mins to
dynamic suites.

BUG=chromium:395865
TEST=local setup, verified subjobs had max_runtime_mins value set
by the suite job.
DEPLOY=apache

Change-Id: I285e6153f3f420f4eefe5d4c79f4212a4df30f58
Reviewed-on: https://chromium-review.googlesource.com/217780
Tested-by: Simran Basi <sbasi@chromium.org>
Reviewed-by: Gwendal Grignou <gwendal@chromium.org>
Commit-Queue: Simran Basi <sbasi@chromium.org>
2 files changed