v3.15.0

Spindel 🕷 Ljungmark

@Spindel

a6768390 · Merge branch 'buildah-rebuild' into 'master' · Mar 04, 2020

Release v3.15.0

- Update to Fedora 31
- Migrate Zabbix server container
- Migrate pgbouncer container
- Migrate redis container
- Workaround for CI/buildah/podman issues