qa/workunits: add Rocky Linux support to librados tests
Add Rocky Linux to the list of supported RPM-based distributions in
test_librados_build.sh and version_number_sanity.sh. Rocky Linux uses
the same package names and commands as CentOS/RHEL, so it can use the
existing RPM codepath.
Without this change, the tests fail on Rocky Linux systems with
"unknown distro" errors.
Fixes: https://tracker.ceph.com/issues/73839
Signed-off-by: Nitzan Mordechai <nmordec@ibm.com>
(cherry picked from commit
32453d25c5de73597c0169baa4264df2bc10c546)