.gitlab-ci.yml:
Add pkgconf and systemd to the list of packages, that are installed
before executing the build and install targets. They are required to
retrieve the correct path for systemd's system units.
.gitlab-ci.yml:
Remove legacy keyword 'cobertura' and use the gitlab >= 15 based
`coverage_report` which is used to specify format and path to coverage
XML.
This invokes the dedicated ci keyringctl command that is responsible
to check with sq-keyring-linter and hokey when completely unknown
new keys are added to the keyring.
.gitlab-ci.yml:
Add rule to run `make lint` if `keyringctl` changes in a merge request.
Add integration stage to always attempt to build and install the keyring
in a containerized environment.
