Updated openstack/openstack
Project: openstack-dev/devstack  0f087c184692d50d614bc6b2c9acbacbf9166fb8

Fix exercises for Trove

Reasons:
 - trove.sh should use native python client to exercise Trove API

Changes:
 - adding datastore and datastore version exercises

Change-Id: I041465e5bda6ad9ec3f597ecc290612b8baef09c
Closes-Bug: #1346743