[Autotest] Pass devserver selection from create_suite_job to dynamic_suite

Pass the selected devserver url from create_suite_job to dynamic_suite as an
argument in dynamic_suite.reimage_and_run method. Update method call of
reimage_and_run in all suite control files.

TEST=tested with dev_harness.py in local workstation,
test run_suite for au suite in local setup.
test with manual update on job_repo_url:
1. start a dummy suite
2. after try job is finished, confirm the database has right job_repo_url in
3. run sql query to modify the job_repo_url:
update chromeos_autotest_db.afe_host_attributes
set value=''
where host_id=1
4. monitor the jobs in the suite, check autoserv.DEBUG log for job_repo_url
being updated:
|Devserver url changed, new devserver is devserver


Change-Id: I913f8f855a8d86335dd7ce708ea46046494e09d8
Reviewed-on: https://gerrit.chromium.org/gerrit/60722
Commit-Queue: Dan Shi <dshi@chromium.org>
Reviewed-by: Dan Shi <dshi@chromium.org>
Tested-by: Dan Shi <dshi@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/64235
Reviewed-by: Prashanth Balasubramanian <beeps@chromium.org>
52 files changed