Cleaned up ClientConfig and added option to provide a Supplier<AccessToken>
Remove dependency on hadoop Configuration in CConfiguration
Minor refactoring
Better error message in ConnectCommand
Update cdap-cli prompt on any connection change
Merge branch 'develop' of github.com:caskdata/cdap into feature/client-token

Conflicts:
	cdap-cli/src/main/java/co/cask/cdap/cli/CLIConfig.java
	cdap-cli/src/main/java/co/cask/cdap/cli/command/ConnectCommand.java
	cdap-cli/src/main/java/co/cask/cdap/shell/CLIMain.java
Made all default configuration in cdap-cli and cdap-client come from CConfiguration
Merge pull request #549 from caskdata/feature/client-token

CDAP-400 Added option to provide a Supplier<AccessToken> and various cleanups
Spark Integration: Streams support for Spark Jobs

Spark Integration: reactored
Spark Integration: Added readFromStream without time
Spark Integration: Fixed according to PR1
Spark Integration: Addressed comments of PR2