added the gnmi drivers to the publish target list

Change-Id: Ic9130633a59feb539a3e06ed9d7fafb09610890b
diff --git a/tools/build/publish-target-list b/tools/build/publish-target-list
index 09490fb..f054204 100644
--- a/tools/build/publish-target-list
+++ b/tools/build/publish-target-list
@@ -21,6 +21,7 @@
     //drivers/default:onos-drivers-default
     //drivers/netconf:onos-drivers-netconf
     //drivers/p4runtime:onos-drivers-p4runtime
+    //drivers/gnmi:onos-drivers-gnmi
     //pipelines/fabric/api:onos-pipelines-fabric-api
     //protocols/bgp/api:onos-protocols-bgp-api
     //protocols/bgp/bgpio:onos-protocols-bgp-bgpio