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>
CBQE-1042: add rebalance to connection test

Change-Id: I480cc30390f5c1dd371f67dbe8fcd3f3e6729a31
Reviewed-on: http://review.couchbase.org/24966
Tested-by: buildbot <build@couchbase.com>
Reviewed-by: Andrei Baranouski <andrei.baranouski@gmail.com>
MB-100: skip Basetestcase.teardown when stop-on-failure for python2.6

Change-Id: If0219053315352daada8d5fe2934624e009cfd65
Reviewed-on: http://review.couchbase.org/25019
Tested-by: buildbot <build@couchbase.com>
Reviewed-by: Andrei Baranouski <andrei.baranouski@gmail.com>