[CDAP-869] First version of namespaced program lifecycle. Implemented v3 start, stop, debug, status, runtimeargs, batch status and batch instance APIs
[CDAP-869] Merged develop, CDAP-774 branches
[CDAP-869] Removed disabled tests
[CDAP-869] Merged changes from develop
Merge branch 'develop' into feature/CDAP-869-namespaced-program-lifecycle
[CDAP-869] Addressed review comments - turned start, stop, debug into a single handler method.
[CDAP-869] Refactored batch instances REST API handler
[CDAP-869] Addressed review comments
Merge pull request #843 from caskdata/feature/CDAP-869-namespaced-program-lifecycle

Feature/cdap 869 namespaced program lifecycle