Does not work with remote action execution

[Monnoroch]

Here is my repository. The software is pretty complicated, but the part relevant to this example is simple. I have a proto_library with some protos, a proto_plugin with a Java binary and a proto_compile rule that wants to use this plugin to generate some files from the mentioned library. If one was to clone this repository, checkout to branch bazel-1 and run bazel test //... with three last bazel releases it would succeed. If one was to use remote bazel execution and use the standard bazelrc for it, when running bazel test //... --config=remote -s one would get the following error:

SUBCOMMAND: # //:test_proto_compile [action 'ProtoCompile test_proto_compile/test_proto_compile.jar']
(cd /home/monnoroch/.cache/bazel/_bazel_monnoroch/feda265a792323e37770534c35ab788f/execroot/blerpc && \
  exec env - \
  /bin/bash -c 'bazel-out/host/bin/external/com_google_protobuf/protoc --descriptor_set_out=bazel-out/k8-fastbuild/bin/test_proto_compile/descriptor.source.bin --proto_path=bazel-out/k8-fastbuild/bin/test_proto_compile --include_imports --include_source_info --java_out=bazel-out/k8-fastbuild/bin/test_proto_compile/test_proto_compile.jar --reactive-blerpc-generator_out=bazel-out/k8-fastbuild/bin/test_proto_compile --plugin=protoc-gen-reactive-blerpc-generator=bazel-out/host/bin/reactive-blerpc bazel-out/k8-fastbuild/bin/test_proto_compile/reactive-blerpc-test/src/main/proto/test_service.proto')
ERROR: /home/monnoroch/dev/blerpc-android/BUILD.bazel:74:1: error executing shell command: '/bin/bash -c bazel-out/host/bin/external/com_google_protobuf/protoc --descriptor_set_out=bazel-out/k8-fastbuild/bin/test_proto_compile/descriptor.source.bin --proto_path=bazel-out/k8-fastbuild/bin/...' failed (Exit 1)
bazel-out/host/bin/reactive-blerpc: Cannot locate runfiles directory. (Set $JAVA_RUNFILES to inhibit searching.)
--reactive-blerpc-generator_out: protoc-gen-reactive-blerpc-generator: Plugin failed with status code 1.

[pcj]

This repo is now on the bazelci. The rbe is not enabled by default ATM but could be changed to make sure this is always tested. PR welcome.

[pcj]

Closing stale PRs and issue, please reopen new one if desired.