Merge branch 'stable-2.14' into stable-2.15

* stable-2.14:
  Allow login during readonly
  Rename ssh commands from put/delete/get to enable/disable/status
  ReadOnlyByHttpIT: Add assertion that REST call worked as expected
  Add tests for enabling/disabling read-only mode by SSH command
  Remove custom servlet and associated tests
  Use RestApiServlet and SSH commands for plugin actions
  Allow to switch read only mode on/off
  Update bazlets to latest stable-2.14 to use 2.14.11 API
  ReadOnly: Use String#equals to compare strings
  Format bzl files with buildifier
  Update bazlets to latest stable-2.14 to use 2.14.10 API
  Update bazlets to latest revision on stable-2.14

Change-Id: I64e45f355a5a963d6b55e71f49076f4b73b31485