CLOUDIFY-2504 move celery_out.out to celery work folder
CLOUDIFY-2504 added constant and remove method
CLOUDIFY-2504 fix flake
Merge pull request #16 from CloudifySource/feature/CLOUDIFY-2504-celery-out

Feature/cloudify 2504 celery out
CLOUDIFY-2486 read celery work folder from env
Merge pull request #18 from CloudifySource/feature/CLOUDIFY-2486-dedicated-celery-config-folder

CLOUDIFY-2486 read celery work folder from env
Merge branch 'develop' into feature/CLOUDIFY-2425-riemann-multi-deployments
CLOUDIFY-2425 added set_stopped to ctx