Unlock repo server pip during deploy
Unlock repo server pip during deploy

The deploy script is also used for minor upgrades (within an openstack release)
Some versions of liberty deploy pip lockdown to the repo server, in order for
an upgrade to suceed the pip config must be removed so that repo builds have
access to external repos.

Partial-Bug: #1028

cloudnull/rpc-openstack,xeregin/rpc-openstack,robb-romans/rpc-openstack,galstrom21/rpc-openstack,darrenchan/rpc-openstack,shannonmitchell/rpc-openstack,cfarquhar/rpc-openstack,cloudnull/rpc-openstack,darrenchan/rpc-openstack,prometheanfire/rpc-openstack,jacobwagner/rpc-openstack,prometheanfire/rpc-openstack,xeregin/rpc-openstack,darrenchan/rpc-openstack,rcbops/rpc-openstack,sigmavirus24/rpc-openstack,hughsaunders/rpc-openstack,BjoernT/rpc-openstack,major/rpc-openstack,jacobwagner/rpc-openstack,shannonmitchell/rpc-openstack,xeregin/rpc-openstack,sigmavirus24/rpc-openstack,robb-romans/rpc-openstack,byronmccollum/rpc-openstack,xeregin/rpc-openstack,sigmavirus24/rpc-openstack,BjoernT/rpc-openstack,byronmccollum/rpc-openstack,hughsaunders/rpc-openstack,mancdaz/rpc-openstack,rcbops/rpc-openstack,byronmccollum/rpc-openstack,git-harry/rpc-openstack,darrenchan/rpc-openstack,galstrom21/rpc-openstack,major/rpc-openstack,cfarquhar/rpc-openstack,sigmavirus24/rpc-openstack,git-harry/rpc-openstack,mancdaz/rpc-openstack