[v9_16] Build contrib in CI & associated fixes
Validation pipeline: https://gitlab.isc.org/isc-projects/bind9/-/pipelines/121081
Closes #3310 (closed)
Edited by Michal Nowak
Validation pipeline: https://gitlab.isc.org/isc-projects/bind9/-/pipelines/121081
Closes #3310 (closed)