Add build ruiles to CTC

Change: 115720167

tensorflow/core/util/ctc/BUILD

@@ -21,6 +21,18 @@ filegroup(
     ],
 )
 
+filegroup(
+    name = "all_files",
+    srcs = glob(
+        ["**/*"],
+        exclude = [
+            "**/METADATA",
+            "**/OWNERS",
+        ],
+    ),
+    visibility = ["//tensorflow:__subpackages__"],
+)
+
 cc_library(
     name = "ctc",
     deps = [