allow auto-discovery of connectors; allow for connector type initialization and shutdown
refactor ConnectorStub to DiscoveryConnectorService
change to added upon name
merge changes from master
move class name conversion to loader class; add test
ensure that all cloud connectors provide default instance name if null is passed into constructor
always use cloud service name as key for lookup for loaded connectors
add loading tests for all connectors
add more unit tests for class path conversion utility
remove duplicated method
remove 'stub' from method names and bring internal descriptions up to date
Merge pull request #173 from slipstream/connector-loader

connector auto-discovery and initialization/shutdown of connectors