Merge branch 'stable-3.3' into master

* stable-3.3:
  Remove plugin's bazel standalone build mode support
  Upgrade bazlets to latest stable-3.2 to build with 3.2.5.1 API
  Fix plugin's documentation after 8fb718b
  Upgrade bazlets to latest stable-3.1 to build with 3.1.10 API
  Allow active read-write traffic to all nodes

Change-Id: I2be5b8a111260bbc877f6e7636495818910a6b0c