Merge branch 'stable-2.16' into stable-3.0

* stable-2.16:
  Documentation: Add missing alternative for plugin in-tree testing
  Upgrade bazlets to latest stable-2.16

Change-Id: Ic59bd23389a20c45e791ebaeb37ae57351e1ada4
diff --git a/src/main/resources/Documentation/build.md b/src/main/resources/Documentation/build.md
index 38084d6..91cc37a 100644
--- a/src/main/resources/Documentation/build.md
+++ b/src/main/resources/Documentation/build.md
@@ -80,10 +80,11 @@
   ./tools/eclipse/project.py
 ```
 
-To execute the tests run:
+To execute the tests run either one of:
 
 ```
   bazel test --test_tag_filters=@PLUGIN@ //...
+  bazel test plugins/@PLUGIN@:@PLUGIN@_tests
 ```
 
 How to build the Gerrit Plugin API is described in the [Gerrit