dev-python/fedmsg: Added at version 0.18.0

dev-python/fedmsg: Added at version 0.18.0

Configuration optimised for making anitya
(https://release-monitoring.org) work out of the box: This includes
disabling verification by default, as its currently impossible to
get x509 verification working on Python 3.5

People who want signature verification enabled are encouraged to
install for python 2.7, and RDEPEND is configured to automatically
pull in m2crypto if you opt to build for python 2.7

However, getting it working will still require m2ext being added to
tree somewhere, which is dubious given m2ext hasn't been touched
since 2012

Package-Manager: portage-2.3.2