CBQE-1116: app.init remove queues from last run

by default remove any workload/queries queues. when --purge is used also clear up cc_queues

Change-Id: I831c4cc963e5232a81bb7bbf13f8f7f0b281460a
Reviewed-on: http://review.couchbase.org/25405
Reviewed-by: Tommie McAfee <tommie@couchbase.com>
Tested-by: Tommie McAfee <tommie@couchbase.com>
CBQE-0: make sdk timeouts info loglevel

Change-Id: I9dffcbcc607ba357a23da10489a0fa3e75e8b32c
Reviewed-on: http://review.couchbase.org/25469
Reviewed-by: Tommie McAfee <tommie@couchbase.com>
Tested-by: Tommie McAfee <tommie@couchbase.com>