CBLT-331:  add 30 second delay in attempt to work around intermittent problem

Change-Id: I2a17de1a7b130a4c84ff50d54f9e23bb2e5d68e1
Reviewed-on: http://review.couchbase.org/40713
Reviewed-by: Philip Labee <philip@couchbase.com>
Tested-by: Philip Labee <philip@couchbase.com>