Description of problem:

If non-standard ssh-port is used, Geo-rep can be configured to use that ssh port by configuring as below

```
gluster volume geo-replication <mastervol> <slavehost>::<slavevol> config ssh-port 2222
```

But this command is failing even if a valid value is passed.

```
$ gluster v geo gv1 centos.sonne::gv2 config ssh-port 2222
geo-replication config-set failed for gv1 centos.sonne::gv2
geo-replication command failed
```