Updated openstack/openstack
Project: openstack/cinder  a8fac1da912f188149c09ad5bdf3334130a9b715

Enable E121,E122,E123,E126,E128 hacking rules

This change enables E121,E122,E123,E126,E128 hacking rule and fixes
all violations found in Cinder.

Change-Id: Ibfdcb3e286393d932e1534500e31a5f90c031adf