Module route protocol support

[adamko147]

Hello,

when deploying grpc/http2 using mta.yaml, the protocol attribute on route is ignored, while it's working with manifest.yaml. Based on https://docs.cloudfoundry.org/devguide/deploy-apps/manifest-attributes.html#routes the available options for protocol are http1, http2 and tcp

Following manifest works well

---
applications:
- name: test-grpc
  port: 8080
  routes:
  - route: test-grpc-mf.cfapps.us10.hana.ondemand.com
    protocol: http2
  health-check-type: process
  buildpacks:
  - binary_buildpack
  command: ./grpcserver

while similar with mta.yaml won't work

_schema-version: 3.3.0
ID: test-grpc
version: 1.0.0

modules:
  - name: test-grpc
    type: binary
    path: .
    parameters:
      command: ./grpcserver
      routes:
        - route: test-grpc-mta.cfapps.us10.hana.ondemand.com
          protocol: http2

Is there any chance / plan to support protocol in mbt toolchain?

Thank you,
Adam