
This patch set adds in -E flag for ``sudo pip install`` so any environment variable is preserved for the install. This allows for some proxy-related variables such as ``http_proxy`` to pass through for pip. This mirrors the change in [0]. [0] https://review.openstack.org/#/c/531270/1 Change-Id: Ib513fce862f31d784634645ac6b038c6a35f4cd6