Rebase to 1.6.15 and fix issue found in bz #871211
This is a rebase to the upstream of 1.6.15. This should be a backward
compatible release with what is currently in Fedora/EPEL. The known
issue of openstack/ec2 fact exception handling has been resolved in
This commit also adds the .asc file back as it used by facter
maintainers during package creation.
Signed-off-by: Michael Stahnke <firstname.lastname@example.org>