Committing vendored dependencies and generated protos

Change-Id: I349c149b513d9de7d9f60bde2c954a939da2fc54
diff --git a/vendor/github.com/grpc-ecosystem/grpc-gateway/utilities/BUILD.bazel b/vendor/github.com/grpc-ecosystem/grpc-gateway/utilities/BUILD.bazel
new file mode 100644
index 0000000..7109d79
--- /dev/null
+++ b/vendor/github.com/grpc-ecosystem/grpc-gateway/utilities/BUILD.bazel
@@ -0,0 +1,21 @@
+load("@io_bazel_rules_go//go:def.bzl", "go_library", "go_test")
+
+package(default_visibility = ["//visibility:public"])
+
+go_library(
+    name = "go_default_library",
+    srcs = [
+        "doc.go",
+        "pattern.go",
+        "readerfactory.go",
+        "trie.go",
+    ],
+    importpath = "github.com/grpc-ecosystem/grpc-gateway/utilities",
+)
+
+go_test(
+    name = "go_default_test",
+    size = "small",
+    srcs = ["trie_test.go"],
+    embed = [":go_default_library"],
+)