gRPC migration update

Change-Id: Icdd1a824948fa994cd36bd121c962f5ecf74e3cf
diff --git a/vendor/github.com/uber/jaeger-client-go/sampler_remote_options.go b/vendor/github.com/uber/jaeger-client-go/sampler_remote_options.go
index e4a6108..64b028b 100644
--- a/vendor/github.com/uber/jaeger-client-go/sampler_remote_options.go
+++ b/vendor/github.com/uber/jaeger-client-go/sampler_remote_options.go
@@ -140,10 +140,7 @@
 		o.samplingRefreshInterval = defaultSamplingRefreshInterval
 	}
 	if o.samplingFetcher == nil {
-		o.samplingFetcher = &httpSamplingStrategyFetcher{
-			serverURL: o.samplingServerURL,
-			logger:    o.logger,
-		}
+		o.samplingFetcher = newHTTPSamplingStrategyFetcher(o.samplingServerURL, o.logger)
 	}
 	if o.samplingParser == nil {
 		o.samplingParser = new(samplingStrategyParser)