CFY-145 update openstack plugin to use provider context when possible
CFY-145 update gitignore
CFY-145 use agent security group from provider context when starting a new server
CFY-145 use agent key name in provider context if provided
Merge pull request #6 from cloudify-cosmo/feature/CFY-145-provider-context

Use provider context for default configuration
CFY-145 fixed floatingip & router properties retrieval
CFY-145 fixed ProviderContext impl
CFY-718 added requirements.txt file
CFY-718 fixed travis configuration
CFY-718 fixed travis
Merge pull request #7 from cloudify-cosmo/feature/CFY-718-remove-dep-links

Feature/cfy 718 remove dep links
block until server has been deleted
use servers_proxy