Fix grpc version to previous version (open-telemetry#975)

ocelotl · web-flow · commit c42c5f3b4ba0 · 2020-08-06T16:10:35.000-07:00
diff --git a/instrumentation/opentelemetry-instrumentation-grpc/setup.cfg b/instrumentation/opentelemetry-instrumentation-grpc/setup.cfg
@@ -42,7 +42,7 @@ packages=find_namespace:
 install_requires =
     opentelemetry-api == 0.12.dev0
     opentelemetry-sdk == 0.12.dev0
-    grpcio ~= 1.27
+    grpcio == 1.30
 
 [options.extras_require]
 test =
