Revert from easy_install to package install for python-pip
Revert from easy_install to package install for python-pip

according to presenting packages in downstream and outdated
way - switch to package based installation

Change-Id: I13fe698a1f80353b210813ba9969130fd2a690ba

redhat-openstack/infrared,redhat-openstack/infrared,redhat-openstack/infrared