Fix get-pip.py 503 error https://bootstrap.pypa.io/get-pip.py
Fix get-pip.py 503 error https://bootstrap.pypa.io/get-pip.py

cloudbase/cinder-ci,rbuzatu90/cinder-ci,costingalan/cinder-ci,costingalan/cinder-ci,cloudbase/cinder-ci,rbuzatu90/cinder-ci