This commit converts the license handling to adhere to the REUSE
specification. It specifically:
1. Adds used licnses to LICENSES/ directory
2. Add "isc" template for adding the copyright boilerplate
3. Changes all source files to include copyright and SPDX license
header, this includes all the C sources, documentation, zone files,
configuration files. There are notes in the doc/dev/copyrights file
on how to add correct headers to the new files.
4. Handle the rest that can't be modified via .reuse/dep5 file. The
binary (or otherwise unmodifiable) files could have license places
next to them in <foo>.license file, but this would lead to cluttered
repository and most of the files handled in the .reuse/dep5 file are
system test files.
(cherry picked from commit 58bd26b6cf)
Before, the zero system test could get stuck almost infinitely, because
the first test sends > 300 queries with 5 seconds timeout on each in
each pass. If named crashed early, it would took the test more than 4
hours to properly timeout.
This commit introduces a "watchdog" on the dig commands running in the
background and failing the test on timeout, failing any test if any dig
command fails to return successfully, and making the tests.sh script
shellcheck clean.
- add CHANGES note
- update copyrights and license headers
- add -j to the make commands in .gitlab-ci.yml to take
advantage of parallelization in the gitlab CI process