Roll back to 1.0.3 of gRPC for Speech. (#580)

Author: lesv

speech/grpc/pom.xml

@@ -49,7 +49,7 @@ limitations under the License.
   <properties>
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
     <codehaus-versions-maven-plugin-version>2.3</codehaus-versions-maven-plugin-version>
-    <grpc-version>1.2.0</grpc-version> <!-- 1.1.2 doesn't work - DO NOT UPGRADE -->
+    <grpc-version>1.0.3</grpc-version> <!-- 1.1.2 doesn't work - DO NOT UPGRADE -->
     <maven-compiler-plugin-version>3.6.0</maven-compiler-plugin-version>
     <xolstice-protobuf-maven-plugin-version>0.5.0</xolstice-protobuf-maven-plugin-version>