py26 is no longer supported by Infra's CI
py26 is no longer supported by Infra's CI

Python 2.6 support would be dropped by
Infra team from mitaka,CI would no longer be testing it,
so projects should drop it too.

Change-Id: If217712753a1cb3cd31c5988f431fed1fe62eaf2

openstack/kloudbuster,openstack/kloudbuster,openstack/kloudbuster,openstack/kloudbuster,openstack/kloudbuster,openstack/kloudbuster