VOL-3501 Code changes to support rpc event

Change-Id: I2536c0c03faa5fb026349c906ebef46323398e9a
diff --git a/go.sum b/go.sum
index 66c6d3a..5bf604f 100644
--- a/go.sum
+++ b/go.sum
@@ -195,10 +195,10 @@
 github.com/onsi/ginkgo v1.6.0/go.mod h1:lLunBs/Ym6LB5Z9jYTR76FiuTmxDTDusOGeTQH+WWjE=
 github.com/onsi/gomega v1.4.2 h1:3mYCb7aPxS/RU7TI1y4rkEn1oKmPRjNJLNEXgw7MH2I=
 github.com/onsi/gomega v1.4.2/go.mod h1:ex+gbHU/CVuBBDIJjb2X0qEXbFg53c61hWP/1CpauHY=
-github.com/opencord/voltha-lib-go/v4 v4.0.7 h1:YDEvyNkdoDkmdwXmQY3ve2IsyJo39A28qNDl0OjXsjM=
-github.com/opencord/voltha-lib-go/v4 v4.0.7/go.mod h1:8NFUZz/mp4OvRmilBRhkLOUrw4G01ruSAVdzQu2ivPc=
-github.com/opencord/voltha-protos/v4 v4.0.8 h1:/P9IYuWPTp/aabS5n1fakQgHCFNzKjW1JHw3TOLAfKE=
-github.com/opencord/voltha-protos/v4 v4.0.8/go.mod h1:W/OIFIyvFh/C0vchRUuarIsMylEhzCRM9pNxLvkPtKc=
+github.com/opencord/voltha-lib-go/v4 v4.0.8 h1:QgcbvmTG917U89FdjchCckvLprETR3A8qnd4BInvRnA=
+github.com/opencord/voltha-lib-go/v4 v4.0.8/go.mod h1:n4QSYuNICFuQCQuTHf4N8Gh4ymOqPNbijqCD+sgSgJ4=
+github.com/opencord/voltha-protos/v4 v4.0.12 h1:x8drb8inaUByjVLFbXSiQwRTU//dfde0MKIHyKb1JMw=
+github.com/opencord/voltha-protos/v4 v4.0.12/go.mod h1:W/OIFIyvFh/C0vchRUuarIsMylEhzCRM9pNxLvkPtKc=
 github.com/opentracing/opentracing-go v1.1.0 h1:pWlfV3Bxv7k65HYwkikxat0+s3pV4bsqf19k25Ur8rU=
 github.com/opentracing/opentracing-go v1.1.0/go.mod h1:UkNAQd3GIcIGf0SeVgPpRdFStlNbqXla1AfSYxPUl2o=
 github.com/pascaldekloe/goe v0.0.0-20180627143212-57f6aae5913c/go.mod h1:lzWF7FIEvWOWxwDKqyGYQf6ZUaNfKdP144TG7ZOy1lc=