Use new kdump config settings

"net $location" is deprecated. Explicitly use ssh or nfs instead.

Change-Id: I074df91fb2e99aa003f3f917c686d8ba50f81123
Bug-Url: https://bugzilla.redhat.com/show_bug.cgi?id=1095140
Signed-off-by: Ryan Barry <rbarry@redhat.com>