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