Add support of EventDomainFronting event

events/init_test.go

@@ -17,6 +17,10 @@ func (o *ObserverMock) EventConnectedToDC(evt mtglib.EventConnectedToDC) {
 	o.Called(evt)
 }
 
+func (o *ObserverMock) EventDomainFronting(evt mtglib.EventDomainFronting) {
+	o.Called(evt)
+}
+
 func (o *ObserverMock) EventTraffic(evt mtglib.EventTraffic) {
 	o.Called(evt)
 }