pkg/kamailio/fedora/17: Added @Base group to BoxGrinder appliances

- This groups is required to get the network to come up automatically for
  Fedora 17 (it wasn't needed for Fedora 16 or CentOS 6).

pkg/kamailio/fedora/17/kamailio-build.appl

@@ -11,6 +11,7 @@ hardware:
       size: 6
 packages:
   - @core
+  - @Base
   - bison			# kamailio
   - db4-devel			# kamailio-bdb
   - expat-devel			# kamailio-xmpp

pkg/kamailio/fedora/17/kamailio.appl

@@ -11,6 +11,7 @@ hardware:
       size: 2
 packages:
   - @core
+  - @Base
   - db4				# kamailio-bdb
   - expat			# kamailio-xmpp
   - GeoIP			# kamailio-GeoIP