CFY-1373 source/target new ctx api replaces ctx.related
CFY-1373 flake8
CFY-1373 initialize node instance only if needed in mock cloudify context
Merge branch 'master' into CFY-1373-new-ctx-api
CFY-1373 removed testtools from tox.ini
CFY-1373 refactor source/target context creation
CFY-1373 added source/target mocks to mock context
CFY-1373 source and target info in logs for relationship operations
CFY-1373 source and target info in logs for relationship operations
CFY-1373 source and target info in logs for relationship operations
Merge branch 'master' into CFY-1373-new-ctx-api
CFY-1373 source and target info in logs for relationship operations
Merge pull request #61 from cloudify-cosmo/CFY-1373-new-ctx-api

Cfy 1373 new ctx api