allow base provider to be injected
hook in discovery class
properly handle passed in connection options
typo
fix connection_options bug and factory for identity proxy
Merge branch 'master' into feature/composition-clean

Conflicts:
	lib/fog/openstackcommon/identity.rb
took out local gemfile stuff
fixed other connection options ref
Merge pull request #17 from fog-openstack-tng/feature/composition-clean

Allow the base namespace to be injected for use in extension layers