[oslo] oslo.metrics package for Fedora

Hello Oslo Team, I am a Fedora packager. I want to package oslo.metrics for Fedora because my package uses oslo.messaging that requires oslo.metrics as you know. oslo.messaging package repository already exists in Fedora. I will take over it from the former package maintainer. the oslo.metrics repository doesn't existso I need to make it. If any concerns with it, please reply. I can update the version as soon as the new version releases by using Fedora's release monitoring system. Thanks in advance, Hirotaka Wakabayashi