Replace deprecated SetUpTestCase with SetUpTestSuite. (#330)

Author: g-easy

opencensus/exporters/stats/stackdriver/internal/stackdriver_e2e_test.cc

@@ -58,7 +58,7 @@ opencensus::stats::MeasureDouble TestMeasure() {
 
 class StackdriverE2eTest : public ::testing::Test {
  protected:
-  static void SetUpTestCase() {
+  static void SetUpTestSuite() {
     TestMeasure();
 
     if (project_id_.empty() || credentials_.empty()) {

opencensus/trace/internal/span_exporter_test.cc

@@ -62,7 +62,7 @@ class MyExporter : public exporter::SpanExporter::Handler {
 
 class SpanExporterTest : public ::testing::Test {
  protected:
-  static void SetUpTestCase() {
+  static void SetUpTestSuite() {
     // Only register once.
     MyExporter::Register();
   }