replace <rc-version> in the below steps with your rc version, e.g. 1.8.0-rc3
git clone https://gitbox.apache.org/repos/asf/activemq-nms-api.git
ensure versions (csproj files, and package.ps1)
build project
git tag -m "tag <rc-version>" <rc-version> git push origin <rc-version>
svn checkout rc dist dev https://dist.apache.org/repos/dist/dev/activemq/activemq-nms-api
create folder for rc, e.g. mkdir <rc-version>
copy all contents from package dir from project into the rc folder.
sign the files, you will find a helper script "sign-release.sh", invoke it as
./sign-release.sh <rc-version> <your-gpg-password>
commit all files into the rc dist dev repo.