CLOUDIFY-2370 use new decorator for task declearation
CLOUDIFY-2370 fix dependencies
Merge branch 'develop' into feature/CLOUDIFY-2370-plugins-as-python-libs

Conflicts:
	riemann_config_loader/tasks.py
CLOUDIFY-2370 fix flake
CLOUDIFY-2370 swtich celery common dependency to develop
Merge pull request #9 from CloudifySource/feature/CLOUDIFY-2370-plugins-as-python-libs

Feature/cloudify 2370 plugins as python libs