[grpc] Support latest version of grpc PoC (#6338)

* use grpcpp rather than deprecated grpc++

* grpcpp Deserialize take ByteBuffer instead of grpc_byte_buffer

* grpc 1.36.0

* Fix to use grpc 1.36.0

* Fix CMakeLists to refer gRPC

* add find_package(Threads)

* Update bazel deps

* Apply workaround about boringssl build error

* Install latest cmake for osx on travis-ci

Co-authored-by: Yeom Gyusun <omniavinco@gmail.com>

.travis.yml

@@ -104,6 +104,7 @@ matrix:
       - if [ "$TRAVIS_OS_NAME" == "linux" ]; then sudo ln -s -v -f $(which gcc-$GCC_VERSION) /usr/bin/gcc; fi
 
       script:
+      - pip install cmake
       - bash .travis/check-sources.sh
       - bash grpc/build_grpc.sh
       - cmake .
@@ -125,6 +126,11 @@ matrix:
           - BUILD_TYPE=Release
 
       script:
+      - pip install --user cmake
+      - mkdir ~/cmake_path
+      - ln -s $(find ~/Library/Python -name cmake -type f | head -n 1) ~/cmake_path/cmake
+      - ln -s $(find ~/Library/Python -name ctest -type f | head -n 1) ~/cmake_path/ctest
+      - export PATH=~/cmake_path:${PATH}
       - bash grpc/build_grpc.sh
       - cmake .
         -DCMAKE_BUILD_TYPE=$BUILD_TYPE