meta-google: gbmc-bridge: Request hostname via DHCP

Change-Id: If3dacbfde966de337702b44b9b06b3eb21755546
Signed-off-by: William A. Kennington III <wak@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 beccc86..42a077d 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
@@ -92,5 +92,10 @@
     networkctl reload && networkctl reconfigure gbmcbr
   fi
 
+  if [ -n "${fqdn-}" ]; then
+    echo "Using hostname $fqdn" >&2
+    hostnamectl set-hostname "$fqdn" || true
+  fi
+
   gbmc_br_dhcp_run_hooks
 fi