Create new queue for non-disttest jobs

Create new queue for non-disttest jobs

After monitoring the system a bit and looking at the jobs. The none
distribution-test jobs do not queue very many csit jobs and if we
tie them to the distro-test queue these jobs would not benefit much
from parallel csit runs. Let's give them their own separate queue
instead with a larger pool of allowed job runs.

Use NUM_EXECUTORS so that we can use the same VM to launch multiple
jobs considering that these jobs do not do anything other than launch
other csit jobs.

Change-Id: Ide261d2550ff69da4fd0f30857f7358f2c7f9cb6
Signed-off-by: Thanh Ha <thanh.ha@linuxfoundation.org>