Replace all references to internal hostnames (silo.kindred.internal,
psql.kindred.internal, minio.kindred.internal, ipa.kindred.internal,
keycloak.kindred.internal) with example.internal equivalents.
Replace gitea.kindred.internal and git.kindred.internal with the public
git.kindred-systems.com instance. Also fix stale silo-0062 repo name
in setup-host.sh and DEPLOYMENT.md.