dumpStorageTable: Fix typos in serverConnection string

Current version of dumpStorageTable has typo on 'serverConnection'
string. This corrects it.

Change-Id: I24123d06f4c2fb4ddca4ee63bc9d3967573f7fa9
Signed-off-by: Humble Chirammal <hchiramm@redhat.com>
Reviewed-on: http://gerrit.ovirt.org/17045
Reviewed-by: Dan Kenigsberg <danken@redhat.com>