Verified on satellite 6.5 snap 20, katello-host-tools, katello-host-tools-tracer and katello-agent are provided and can be installed successfully. BZ#1687261 remains to be fixed, though imho it doesn't need to block this bz
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.
For information on the advisory, and where to find the updated
files, follow the link below.
If the solution does not work for you, open a new bug report.
https://access.redhat.com/errata/RHSA-2019:1222