[build] allow ruby lint command to lint the root Rakefile

Author: titusfortner

BUILD.bazel

@@ -21,6 +21,14 @@ filegroup(
     visibility = ["//visibility:public"],
 )
 
+filegroup(
+    name = "rakefile",
+    srcs = [
+        "Rakefile",
+    ],
+    visibility = ["//rb:__subpackages__",],
+)
+
 alias(
     name = "grid",
     actual = "//java/src/org/openqa/selenium/grid:executable-grid",

rb/BUILD.bazel

@@ -178,8 +178,12 @@ rb_test(
         "--autocorrect",
         "--config=rb/.rubocop.yml",
         "rb/",
+        "Rakefile",
+    ],
+    data = [
+        ".rubocop.yml",
+        "//:rakefile",
     ],
-    data = [".rubocop.yml"],
     main = "@bundle//bin:rubocop",
     tags = ["no-sandbox"],
     deps = [