Remove version hard coding in integration tests

Remove version hard coding in integration tests

- Version hardcoding on integration tests will cause problems when
releasing artifacts, hence removing it and relaying solely on the
version number present in the pom file.
- Enabled verify phase in integration tests else developer build will
happily succed even if there are integration test failures, which will
be only discovered during the controller-verify phase.

Change-Id: I52a0e16d1228ef09c87fa8aa7dc1f21dc0663fae
Signed-off-by: Giovanni Meo <gmeo@cisco.com>