Enable auto-generating sources rules

pkg/api/validation/BUILD

@@ -86,3 +86,20 @@ go_test(
         "//vendor:github.com/ghodss/yaml",
     ],
 )
+
+filegroup(
+    name = "package-srcs",
+    srcs = glob(["**"]),
+    tags = ["automanaged"],
+    visibility = ["//visibility:private"],
+)
+
+filegroup(
+    name = "all-srcs",
+    srcs = [
+        ":package-srcs",
+        "//pkg/api/validation/genericvalidation:all-srcs",
+        "//pkg/api/validation/path:all-srcs",
+    ],
+    tags = ["automanaged"],
+)

pkg/api/validation/genericvalidation/BUILD

@@ -38,3 +38,16 @@ go_test(
         "//pkg/util/validation/field:go_default_library",
     ],
 )
+
+filegroup(
+    name = "package-srcs",
+    srcs = glob(["**"]),
+    tags = ["automanaged"],
+    visibility = ["//visibility:private"],
+)
+
+filegroup(
+    name = "all-srcs",
+    srcs = [":package-srcs"],
+    tags = ["automanaged"],
+)

pkg/api/validation/path/BUILD

@@ -20,3 +20,16 @@ go_test(
     library = ":go_default_library",
     tags = ["automanaged"],
 )
+
+filegroup(
+    name = "package-srcs",
+    srcs = glob(["**"]),
+    tags = ["automanaged"],
+    visibility = ["//visibility:private"],
+)
+
+filegroup(
+    name = "all-srcs",
+    srcs = [":package-srcs"],
+    tags = ["automanaged"],
+)