VOL-3501 Refeactoring of code for event handling

Change-Id: I2d8e4bd3c6b711bc2fc3ef91e6f372ab80d2beb4
diff --git a/vendor/modules.txt b/vendor/modules.txt
index 9095dc1..ab9998d 100644
--- a/vendor/modules.txt
+++ b/vendor/modules.txt
@@ -74,20 +74,22 @@
 # github.com/opencord/omci-lib-go v0.13.4
 github.com/opencord/omci-lib-go
 github.com/opencord/omci-lib-go/generated
-# github.com/opencord/voltha-lib-go/v4 v4.0.3
+# github.com/opencord/voltha-lib-go/v4 v4.0.4
 github.com/opencord/voltha-lib-go/v4/pkg/adapters
 github.com/opencord/voltha-lib-go/v4/pkg/adapters/adapterif
 github.com/opencord/voltha-lib-go/v4/pkg/adapters/common
 github.com/opencord/voltha-lib-go/v4/pkg/config
 github.com/opencord/voltha-lib-go/v4/pkg/db
 github.com/opencord/voltha-lib-go/v4/pkg/db/kvstore
+github.com/opencord/voltha-lib-go/v4/pkg/events
+github.com/opencord/voltha-lib-go/v4/pkg/events/eventif
 github.com/opencord/voltha-lib-go/v4/pkg/flows
 github.com/opencord/voltha-lib-go/v4/pkg/kafka
 github.com/opencord/voltha-lib-go/v4/pkg/log
 github.com/opencord/voltha-lib-go/v4/pkg/probe
 github.com/opencord/voltha-lib-go/v4/pkg/techprofile
 github.com/opencord/voltha-lib-go/v4/pkg/version
-# github.com/opencord/voltha-protos/v4 v4.0.5
+# github.com/opencord/voltha-protos/v4 v4.0.6
 github.com/opencord/voltha-protos/v4/go/common
 github.com/opencord/voltha-protos/v4/go/ext/config
 github.com/opencord/voltha-protos/v4/go/inter_container