Specify binary release files in BUILD instead of in Jenkins

This is more track-able compared to Jenkins.

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=146120190

Change-Id: Ie284e431ca1a777b19f64d5e6a7bb9a2c757779d

example/BUILD

@@ -12,6 +12,15 @@ package(
     default_visibility = ["//visibility:public"],
 )
 
+filegroup(
+    name = "binary_release_files",
+    srcs = [
+        "provisioning_example.cc",
+        ":example_data",
+        ":provisioning_message_generator",
+    ],
+)
+
 filegroup(
     name = "example_data",
     srcs = glob(["example_data/*"]),