Change celery versions to fix intermittent issue
Change celery versions to fix intermittent
issue

Change-Id: Ia301a791bfb2c23d68f450c1b254c8ff77b6ccd8
Reviewed-on: http://review.couchbase.org/c/perfrunner/+/134837
Tested-by: Build Bot <80754af91bfb6d1073585b046fe0a474ce868509@couchbase.com>
Reviewed-by: Jyotsna <3cacb23db2a7c1408e4b8802d74c875d7724fa89@couchbase.com>

couchbase/perfrunner,couchbase/perfrunner,couchbase/perfrunner,couchbase/perfrunner,couchbase/perfrunner,couchbase/perfrunner