CFY-1746 fix system tests to fit nodecellar upgrade
CFY-1746 fix nodecellar system tests
CFY-1746 fix tests
CFY-1746 fix tests
CFY-1746 fix tests
CFY-1746 point to different branch of nodecellar
CFY-1746 fix test
CFY-1746 fix flake
CFY-1746 fix test
CFY-1746 fix branch
CFY-1746 refactor tests
CFY-1746 fix flake
CFY-1746 raise runtime error if inputs are not supplied by subclasses
CFY-1746 fix branch to master
Merge pull request #69 from cloudify-cosmo/CFY-1746-nodecellar-upgrade

Cfy 1746 nodecellar upgrade