sos: fix config import

config module is in not a platform-specific module so
it's in lib and not in lib64 tree.

Change-Id: Ic5bd8af6a6062a857a48aa205f8461f138ac5979
Bug-Url: https://bugzilla.redhat.com/show_bug.cgi?id=1164215
Signed-off-by: Sandro Bonazzola <sbonazzo@redhat.com>
Reviewed-on: http://gerrit.ovirt.org/35312
Tested-by: Yeela Kaplan <ykaplan@redhat.com>
Reviewed-by: Yeela Kaplan <ykaplan@redhat.com>
Reviewed-by: Dan Kenigsberg <danken@redhat.com>