CFY-1433 start adding deployment modification flow
CFY-1433 for travis
CFY-1433 fix tests and update for travis
CFY-1433 fix test
Merge branch 'master' into CFY-1433-multi-instance-runtime
Merge branch 'master' into CFY-1433-multi-instance-runtime
CFY-1433 some cleanup
Merge branch 'master' into CFY-1433-multi-instance-runtime
CFY-1433 some more testing
Merge branch 'master' into CFY-1433-multi-instance-runtime

Conflicts:
	rest-service/dev-requirements.txt
	tests/dev-requirements.txt
Merge branch 'master' into CFY-1433-multi-instance-runtime
CFY-1433 fix bug in relationships removal and add test to rest service for node instance addition
CFY-1433 add test for node instance removal
CFY-1433 add integration tests for modify deployment
Merge branch 'master' into CFY-1433-multi-instance-runtime
CFY-1433 flake8
CFY-1433 add test for updated number of instances on node (to test elastic search storage)
CFY-1433 add more tests for modification related elastic search storage
CFY-1433 add swagger documenation to deployment modification REST call
CFY-1433 add comments and test for illegal modification stage