CFY-552 added cli and openstack provider dependencies
CFY-552 git clone now clone to a temp folder and returns the path by default
CFY-552 added method to read yaml files to dicts
CFY-552 added test for hello-world
CFY-552 fix code review commnets
CFY-552 fix image and flavor
Merge pull request #2 from cloudify-cosmo/feature/CFY-552-hello-world-test

Feature/cfy 552 hello world test