Failed to set up SSH tunneling for host [garden-cluster-main-0]

```
openstack_compute_instance_v2.mgmt_server (remote-exec): WARN[0000] Failed to set up SSH tunneling for host [garden-cluster-main-0]: Can't retrieve Docker Info: error during connect: Get "http://%2Fvar%2Frun%2Fdocker.sock/v1.24/info": Failed to dial ssh using address [garden-cluster-main-0:22]: dial tcp: lookup garden-cluster-main-0 on 127.0.0.53:53: server misbehaving
```