Hello,
SuSE added a /etc/os-release file with SP4 for SLES11 and there is a little bug in lib/ansible/module_utils/facts.py, which leads to always having “0” in ansible_distribution_release instead of “4”.
I checked with ansible-1.9.3.
I made a little patch to fix this: https://github.com/ansible/ansible/pull/12556/files
Regards