message: Fix util_tensor_slice_set_test to not be sensitive to the order of
  the results returned by TensorSlice.QueryMeta(). Since TensorSlice
  uses unordered_map<>, the order is not guaranteed.
diff: @@ -218,10 +218,18 @@ TEST(TensorSliceSetTest, QueryMetaTwoD) {
  std::vector<std::pair<TensorSlice, string>> results;
  EXPECT_TRUE(tss.QueryMeta(s, &results));
  EXPECT_EQ(2, results.size());
  + // Allow results to be returned in either order
  + if (results[0].second == "slice_2") {
  EXPECT_EQ("2,2:0,3", results[0].first.DebugString());
  EXPECT_EQ("slice_2", results[0].second);
  EXPECT_EQ("0,2:-", results[1].first.DebugString());
  EXPECT_EQ("slice_1", results[1].second);
  + } else {
  + EXPECT_EQ("0,2:-", results[0].first.DebugString());
  + EXPECT_EQ("slice_1", results[0].second);
  + EXPECT_EQ("2,2:0,3", results[1].first.DebugString());
  + EXPECT_EQ("slice_2", results[1].second);
  + }
  }
  // Slice #4 includes the hole and so there is no match
  