Currently, the gRPC compiler isn't properly using the fully qualified
string name `java.lang.String` instead of `String`. Update the generator
to use the `$String$` alias to avoid compile issues with protobuf
messages called String.
Fixes#10316.
Introduce an AsyncService interface in the generated code and move the methods from <service>ImplBase to default implementation of the interface.
* update pom files to allow java 1.8
* Add a bindService(<service>Async) method
* Change TestServiceImpl to use the interface and include a bind method instead of extending TestServiceImplBase.
* istio-interop-testing: create a separate project and add istio echo server code
after removing from the grpc-interop-testing project
* add jib support
* use imported echo.proto from istio repo
* use context to propagate values from interceptor so the service's echo method has all values required to compose EchoResponse
Philip K. Warren
Benjamin Peterson
Larry Safran
sanjaypujare