Comment 7 for bug 1578655

Reviewed: https://review.opencontrail.org/19935
Committed: http://github.org/Juniper/contrail-controller/commit/b4276b9321acddf8bbd3709855958fb1b5a12217
Submitter: Zuul
Branch: R3.0

commit b4276b9321acddf8bbd3709855958fb1b5a12217
Author: Sundaresan Rajangam <email address hidden>
Date: Thu May 5 07:50:21 2016 -0700

Fix test_analytics_db UT failure

The cql connection times out in 5 seconds after connection
establishment due to idle session. The default idle_heartbeat_interval
is 30 seconds. On changing idle_heartbeat_interval to less than
5 seconds, the issue got resolved. This behavior is seen with
new cassandra-driver (3.3.0). In production, we use
cassandra-driver version 3.0.0. Hence forcing the systemless
test to use version 3.0.0 instead of latest.

Change-Id: I02aa30f2deb777bb95d0d37de80d0395fec6479d
Closes-Bug: #1578655
(cherry picked from commit 90b3c879ce52aa427eb4f13945084c80628f390f)