core: add a break line before printing the ceph config
core: add a break line before printing the ceph config

It's easier to read the config if there is a new line before instead
having a truncated version like:

```
2022-01-26 06:39:41.421373 D | cephclient: config file @ /etc/ceph/ceph.conf: [global]
fsid                = 0650a1d5-d688-4575-97fc-7b3052a8a3dd
mon initial members = a
mon host            = [v2:10.104.192.209:3300,v1:10.104.192.209:6789]

[client.admin]
keyring = /var/lib/rook/rook-ceph/client.admin.keyring
```

Now we have:

```
2022-01-26 06:39:41.421373 D | cephclient: config file @ /etc/ceph/ceph.conf:
[global]
fsid                = 0650a1d5-d688-4575-97fc-7b3052a8a3dd
mon initial members = a
mon host            = [v2:10.104.192.209:3300,v1:10.104.192.209:6789]

[client.admin]
keyring = /var/lib/rook/rook-ceph/client.admin.keyring
```

Signed-off-by: Sébastien Han <62d754cc350e84d3b1c32ae79f976f5348e74a40@redhat.com>

rook/rook,rook/rook,rook/rook,rook/rook,rook/rook