use virtual-env to isolate dependencies
add pfs_install_with_env for install with virtualenv
missed pkg python-virtualenv
add packages
Merge branch 'feature/DCB-10/pfs/betty/grizzly' of github.com:MirantisDellCrowbar/barclamp-keystone into feature/DCB-10/pfs/betty/grizzly

Conflicts:
	crowbar.yml
virtualenv_wrapping, add params of view to crowbar app, fixes
move code to git bar clamp and little fixes
typo
fixes
fix
restart keystone in recipe
add binaries for virtualenv wrapping
fixes
Merge branch 'feature/DCB-10/pfs/betty/grizzly' into feature/pfs/betty/grizzly - venv