CLOUDIFY-2048 depend on develop of cosmo-celery-common
CLOUDIFY-2048 added virtualenv support
CLOUDIFY-2048 import constants from cosmo.constants
CLOUDIFY-2048 bump cosmo-celery-common dependency to 0.1.1
CLOUDIFY-2048 fix error formating order
Merge pull request #3 from CloudifySource/feature/CLOUDIFY-2048-virtualenv-suuport

Feature/cloudify 2048 virtualenv suuport