Merge branch 'jk/upload-pack-v2-capability-cleanup'

The upload-pack program, when talking over v2, accepted the packfile-uris protocol extension from the client, even if it did not advertise the capability, which has been corrected. * jk/upload-pack-v2-capability-cleanup: upload-pack: only accept packfile-uris if we advertised it upload-pack: use existing config mechanism for advertisement upload-pack: centralize setup of sideband-all config upload-pack: use repository struct to get config