* Makefile: Only run precise-icehouse and trusty-icehouse tests by default
and increase test timeout
* t/00-setup: Simplify dependencies install and add glanceclient
* t/README: Mention charm-tools dependency
* t/basic_deployment.py:
- Specify unstable charm deployment
- Use dicts in add_services
- Let things settle with short sleep after deployment
- Rename restart test
- Cleanup on test failure
- Fix mechanism_drivers expected value in test_ml2_config()