VOL-3588 Update OFAgent to support new version of protos

Change-Id: Ic3944779f9a600ebcd5d7a916616f473059e311e
diff --git a/internal/pkg/mock/voltha_client_mock.go b/internal/pkg/mock/voltha_client_mock.go
index d19a9ff..a41ae2f 100644
--- a/internal/pkg/mock/voltha_client_mock.go
+++ b/internal/pkg/mock/voltha_client_mock.go
@@ -20,10 +20,10 @@
 	"context"
 
 	. "github.com/golang/protobuf/ptypes/empty"
-	"github.com/opencord/voltha-protos/v3/go/common"
-	"github.com/opencord/voltha-protos/v3/go/omci"
-	"github.com/opencord/voltha-protos/v3/go/openflow_13"
-	. "github.com/opencord/voltha-protos/v3/go/voltha"
+	"github.com/opencord/voltha-protos/v4/go/common"
+	"github.com/opencord/voltha-protos/v4/go/omci"
+	"github.com/opencord/voltha-protos/v4/go/openflow_13"
+	. "github.com/opencord/voltha-protos/v4/go/voltha"
 	"google.golang.org/grpc"
 )
 
@@ -275,3 +275,11 @@
 func (c MockVolthaClient) StartOmciTestAction(ctx context.Context, in *OmciTestRequest, opts ...grpc.CallOption) (*TestResponse, error) {
 	return &TestResponse{}, nil
 }
+
+func (c MockVolthaClient) ForceDeleteDevice(ctx context.Context, in *common.ID, opts ...grpc.CallOption) (*Empty, error) {
+	return &Empty{}, nil
+}
+
+func (c MockVolthaClient) SetExtValue(ctx context.Context, in *ValueSet, opts ...grpc.CallOption) (*Empty, error) {
+	return &Empty{}, nil
+}