using python_version to try issues with 0.25.0rc1 (#306)

* use incompatible py toolchains flag

* update pin to  fix to rules_docker

* Update WORKSPACE

* Update WORKSPACE

.bazelrc

@@ -15,3 +15,14 @@
 build --workspace_status_command="bash print-workspace-status.sh"
 run --workspace_status_command="bash print-workspace-status.sh"
 test --test_output=errors --workspace_status_command="bash print-workspace-status.sh"
+
+# Flags to explicitly use python toolchains to select appropriate py_runtime
+# Also, force host binaries to use py2.
+# Note these flags will only work with Bazel 0.25.0 or above.
+build --incompatible_use_python_toolchains
+build --host_force_python=PY2
+test --incompatible_use_python_toolchains
+test --host_force_python=PY2
+run --incompatible_use_python_toolchains
+run --host_force_python=PY2
+

WORKSPACE

@@ -23,13 +23,13 @@ http_archive(
     url = "https://github.com/google/protobuf/archive/v3.7.1.tar.gz",
 )
 
-# Mention subpar directly to ensure we get a version dated after 2019-03-07,
-# which included fixes for incompatible change flags added in Bazel 0.23. This
+# Mention subpar directly to ensure we get version 2.0.0,
+# which included fixes for incompatible change flags added in Bazel 0.25. This
 # can be removed once other dependencies are updated.
 git_repository(
     name = "subpar",
-    commit = "0356bef3fbbabec5f0e196ecfacdeb6db62d48c0",  # 2019-03-07
     remote = "https://github.com/google/subpar.git",
+    tag = "2.0.0",
 )
 
 http_archive(

k8s/BUILD

@@ -48,6 +48,7 @@ py_test(
     data = [
         "//examples/hellogrpc/cc/server:server.tar",
     ],
+    python_version = "PY2",
     deps = [
         ":resolver_lib",
         "@mock",