COOK-2475 prevent celerybeat from being configured unnecessarily
COOK-2484: use owner and group from application properties
COOK-2484: setting HOME env var to app shared directory when installing requirements
Merge pull request #21 from needle-cookbooks/COOK-2475

COOK-2475 - Prevent celerybeat from being configured unnecessarily
Merge pull request #22 from needle-cookbooks/COOK-2484

COOK-2484: Create virtualenv and install requirements as uid/gid specified in application resource properties