Tests for Hamster plugins and small changes in Openstack tests
Merge branch 'master' of https://github.com/allegro/ralph_pricing into Hamster

Conflicts:
	src/ralph_pricing/plugins/hamster.py
Update test_hamster.py
Update test_hamster.py
Merge pull request #30 from quamilek/Hamster

Tests for Hamster plugin and small changes in OpenStack tests