Update build_slice.sh

magma/build_slice.sh

@@ -16,7 +16,7 @@ osm netslice-template-create magma_slice.yaml
 osm nsi-create --nsi_name magma_slice --nst_name magma_slice_hackfest_nst \
 --config_file params.yaml --ssh_keys ~/.ssh/id_rsa.pub --vim_account etsi-openstack
 
-sleep 8
+sleep 15
 osm ns-list | grep "\<slice_hackfest_nsd_epc\>" | awk '{print $4}' | xargs -l1 juju switch
 juju model-config enable-os-refresh-update=false enable-os-upgrade=false
 juju model-config apt-mirror=http://fr.archive.ubuntu.com/ubuntu/