Start running tests with the EngFlow grid (#12020)

Author: shs96c

.github/workflows/ci-remote.yml

@@ -0,0 +1,16 @@
+name: CI - RBE
+
+on:
+  workflow_call:
+  workflow_dispatch:
+
+jobs:
+  rbe-small-tests:
+    name: RBE - Small Tests
+    uses: ./.github/workflows/bazel.yml
+    env:
+      GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+    with:
+      name: Cache
+      cache-key: java
+      run: bazel test --config=remote --test_size_filters=small //java/... //py/...