[release-announce] openstack-placement 3.0.0.0rc1 (ussuri)

Hello everyone, A new release candidate for openstack-placement for the end of the Ussuri cycle is available! You can find the source code tarball at: https://tarballs.openstack.org/placement/ Unless release-critical issues are found that warrant a release candidate respin, this candidate will be formally released as the final Ussuri release. You are therefore strongly encouraged to test and validate this tarball! Alternatively, you can directly test the stable/ussuri release branch at: https://opendev.org/openstack/openstack-placement/src/branch/stable/ussuri Release notes for openstack-placement can be found at: https://docs.openstack.org/releasenotes/placement/