meta-google: dhcp-done: switching to new dhcp-done service

We want to coordinate with netboot server for powercycling instead of
triggering pwercycle ourselves. dhcp-done will send status based on the
parameters to the netboot server.

This is the first part, second part needs to be merged after installer
support

Change-Id: I4ebaaf06114fc36518a25cdc6cd9f093859963c8
Signed-off-by: Yuxiao Zhang <yuxiaozhang@google.com>
diff --git a/meta-google/recipes-google/networking/gbmc-bridge/gbmc-br-dhcp.sh b/meta-google/recipes-google/networking/gbmc-bridge/gbmc-br-dhcp.sh
index f4ac5a5..6557125 100644
--- a/meta-google/recipes-google/networking/gbmc-bridge/gbmc-br-dhcp.sh
+++ b/meta-google/recipes-google/networking/gbmc-bridge/gbmc-br-dhcp.sh
@@ -76,5 +76,5 @@
   # Ensure that the installer knows we have completed processing DHCP by
   # running a service that reports completion
   echo 'Start DHCP Done' >&2
-  systemctl start dhcp-done --no-block
+  systemctl start dhcp-done@DONE --no-block
 fi