[VOL-3801] remove consul support

    Bump up voltha-lib-go version to remove consul

Change-Id: I475639d35cde3e482766e4f189ac3746e8b6c179
diff --git a/vendor/github.com/opencord/voltha-lib-go/v4/pkg/db/kvstore/client.go b/vendor/github.com/opencord/voltha-lib-go/v4/pkg/db/kvstore/client.go
index 480d476..b35f1f3 100644
--- a/vendor/github.com/opencord/voltha-lib-go/v4/pkg/db/kvstore/client.go
+++ b/vendor/github.com/opencord/voltha-lib-go/v4/pkg/db/kvstore/client.go
@@ -21,8 +21,6 @@
 )
 
 const (
-	// Default timeout in seconds when making a kvstore request
-	defaultKVGetTimeout = 5 * time.Second
 	// Maximum channel buffer between publisher/subscriber goroutines
 	maxClientChannelBufferSize = 10
 )
@@ -80,6 +78,7 @@
 	Get(ctx context.Context, key string) (*KVPair, error)
 	Put(ctx context.Context, key string, value interface{}) error
 	Delete(ctx context.Context, key string) error
+	DeleteWithPrefix(ctx context.Context, prefixKey string) error
 	Reserve(ctx context.Context, key string, value interface{}, ttl time.Duration) (interface{}, error)
 	ReleaseReservation(ctx context.Context, key string) error
 	ReleaseAllReservations(ctx context.Context) error