First pass whirr-cm shell implementation, providing client download, host query and service status
Remove standalone CM API script/shell, paving way for Whirr command architecture
Remove unnecessary constants
Refactor package and class names to suit extension to Whirr Command architecture
Rename CmServerServiceTypeRepository CmServerServiceTypeRepo - shorter to read and fit on the screen\!
Merge pull request #13 from ggear/graham-patch-CDH-11359

CDH-11359: Provide whirr-cm interactive command line shell