Revert the inclusion of the pypi-openstack and pip-cache elements
Revert the inclusion of the pypi-openstack and pip-cache elements

Revert the inclusion of the pypi-openstack and pip-cache elements
in images, so they can be discussed in another commit.

Change-Id: I1ddd4e3f3326746e86a70b74a07c1fd537b5e45c

rdo-management/tripleo,rdo-management/tripleo