change to osm user at magma/hackfest_gateway_vnfd/hackfest_gateway_vnfd.yaml

Signed-off-by: tierno <alfonso.tiernosepulveda@telefonica.com>

magma/hackfest_gateway_vnfd/hackfest_gateway_vnfd.yaml

@@ -38,7 +38,7 @@ vnfd:
     id: default-vnf-configuration
     config-access:
       ssh-access:
-        default-user: ubuntu
+        default-user: osm
         required: true
     initial-config-primitive:
     - name: config