voltha_lib_go and voltha_protos update towards Onu SW Upgrade enhancements

Signed-off-by: mpagenko <michael.pagenkopf@adtran.com>
Change-Id: I2fbedbe8d6eb452ba86f118146f5eae54b97b88e
diff --git a/.golangci.yml b/.golangci.yml
index 76e7b31..1eb9e9e 100644
--- a/.golangci.yml
+++ b/.golangci.yml
@@ -84,6 +84,12 @@
     - "don't use underscores in Go names; method Start_omci_test"
     - "don't use underscores in Go names; method Get_ext_value"
     - "don't use underscores in Go names; method Single_get_value_request"
+    - "don't use underscores in Go names; method Download_onu_image"
+    - "don't use underscores in Go names; method Get_onu_image_status"
+    - "don't use underscores in Go names; method Abort_onu_image_upgrade"
+    - "don't use underscores in Go names; method Get_onu_images"
+    - "don't use underscores in Go names; method Activate_onu_image"
+    - "don't use underscores in Go names; method Commit_onu_image"
     - "Error return value of `dh.coreProxy.PortStateUpdate` is not checked"
     - "Error return value of `rxCallbackEntry.cbFunction` is not checked"
     - "Error return value of `oo.sendNextRequest` is not checked"