Improve distro_info and update subscribe task

Improve distro_info to return minor OS version.

Also update subscribe task to register for an specific release.
Merge pull request #88 from elyezer/improve-distro-info

Improve distro_info and update subscribe task
added update_rpms
Revert "added update_rpms"

This reverts commit 1da82069973a172a85c7829f3ccb31936111cd82.
update_rpms functionality
update_rpms functionality
clean up style a bit, add warn
Merge pull request #89 from cswiii/master

update_rpms functionality