Make Hacking E1XX compliant

E121 continuation line indentation is not a multiple of four
E126 continuation line over-indented for hanging indent
E127 continuation line over-indented for visual indent
E128 continuation line under-indented for visual indent

A part of blueprint openstack-hacking-compliant

Change-Id: I06ce0ee5132178a777ce9b9e409ef1d24af1ea1f
Merge "Make Hacking E1XX compliant"