[Pkg-salt-team] Bug#889934: salt-common needs Breaks on package versions without Python 3 support

[Adrian Bunk]

Package: salt-common
Version: 2017.7.2+dfsg1-1
Severity: serious
Control: block -1 by 889927 889928 889929 889932 889933

salt-common will need Breaks for at least the following packages:
- salt-formula-ceilometer
- salt-formula-cinder
- salt-formula-glance
- salt-formula-keystone
- salt-formula-kubernetes