[VOL-1385]: code changes to support ONU delete

Change-Id: I8be96e499ccdae29121e81a500a65d0d1a78e5d2
diff --git a/.golangci.yml b/.golangci.yml
index 6da1be5..174d141 100644
--- a/.golangci.yml
+++ b/.golangci.yml
@@ -79,6 +79,7 @@
     - "don't use underscores in Go names; method Revert_image_update"
     - "don't use underscores in Go names; method Disable_port"
     - "don't use underscores in Go names; method Enable_port"
+    - "don't use underscores in Go names; method Child_device_lost"
   exclude-use-default: false
 
 # golangci.com configuration