CBQE-1042: test to measure memory usage of beam.smp

Change-Id: I4926afd20f624954f8a33ee84a5e2a2b40126e18
Reviewed-on: http://review.couchbase.org/24702
Reviewed-by: Andrei Baranouski <andrei.baranouski@gmail.com>
Tested-by: Iryna Mironava <irynamironava@yandex.ru>