[CI] The trunk for the CI and OpenSSI repositories

[Brian J. Watson]

A file should only be added to the trunk for the CI and OpenSSI
repositories if it's distro-neutral (i.e., it's absolutely identical
between the Debian and RH branches).

This differs from the old policy of adding the vanilla GNU/Linux version
of a file to the trunk, which was primarily geared toward Debian users.
This policy is outdated because there is now an OPENSSI-DEBIAN branch.
Debian-specific files should only go there, and Red Hat-specific files
should only go on the OPENSSI-RH branch. All distro-neutral files should
be added to the trunk and aliased onto both branches.

Hopefully this clarifies things,

Brian