Start testing RHEL-10 builds
There are already kernel builds for rhel-10 in brew.
RHEL-10 compose should land in beaker soon, meanwhile we could test them using the ELN compose.
- Update brew triggers to support rhel10
- Add rhel-10 tree to kpet-db
- QE still not planned to test RHEL10, but we could run an small amount of tests. I think we could run same tests we run on ELN.