create a base single and multi cluster class
dont use sys.exit(1)
Merge pull request #23 from arpitgupta/master

create a base single and multi cluster class
adding Apache License and excluding resource in pom
Merge remote-tracking branch 'upstream/master'

Conflicts:
	merlin/src/test/java/org/apache/falcon/regression/ProcessInstanceStatusTest.java
	merlin/src/test/java/org/apache/falcon/regression/ProcessInstanceSuspendTest.java