CFY-1375 changed the task_exists mock and added tests.
CFY-1375 flake8
CFY-1375 added missing newlines.
Update basic_start_not_exists.yaml
Update basic_stop_not_exists.yaml
Update basic_task_not_exist.yaml
CFY-1375 changed the task_exists mock and added tests.
CFY-1375 flake8
CFY-1375 added missing newlines.
CFY-1375 refactoring after review.
CFY-1375 merged conflicts.
Merge pull request #156 from cloudify-cosmo/CFY-1375-verify-task-causes-uninstall-failure

Cfy 1375 verify task causes uninstall failure