Merge remote-tracking branch 'origin/2.8' into 2.9

These changes, or more appropriate changes like them, are already in 2.9.
So this merge was done with "-s ours", to keep the 2.9 files unchanged.

* origin/2.8:
  halcompile test needs sudo for --install
  fix halcompile test to work both rip and installed
  fix github ci for 2.8
  gpg: add public part of linuxcnc deb archive signing key to our keyring

Author: SebKuzminsky