Duplicate installations of packages in system python environment
will take precedance by default and make unforseeable issues, so
we declare to use packages in virutalenv first and then system packages.
Change-Id: I29a56ffad33dfabec3ea73a84dbdc8e943ca8153
Closes-bug: #1354625
Cherry-pick from review.openstack.org/#/c/113052/
Create virtualenv for compass, point compass site packages to virtualenv,
make virtualenv accessable for apache.
Change compass executable scripts to use python in env to be virtualenv
compatible.
Make progress_update daemon use virtualenv.
Comment out some health checks that use packages not available to pip, eg,
yum, apt since we have other ways to check packages any way.
Conflicts:
conf/compassd
install/compass.sh
install/dependency.sh
install/prepare.sh
misc/apache/compass.wsgi
requirements.txt
Change-Id: Ib48633601bf238ffc660c4694834897edbe45e07
