respect relative_install_path for binaries in APEXes

Bug: 123721777
Test: m (apex_test.go has the test)
Change-Id: I89bc83d4bc6fe8dc374cf36e06e795c75b290844
diff --git a/apex/apex_test.go b/apex/apex_test.go
index 5b767ef..f221cf2 100644
--- a/apex/apex_test.go
+++ b/apex/apex_test.go
@@ -696,10 +696,9 @@
 	ensureListContains(t, dirs, "lib/foo")
 	ensureListContains(t, dirs, "lib/foo/bar")
 
-	// TODO(b/123721777) respect relative path for binaries
-	// ensureListContains(t, dirs, "bin")
-	// ensureListContains(t, dirs, "bin/foo")
-	// ensureListContains(t, dirs, "bin/foo/bar")
+	ensureListContains(t, dirs, "bin")
+	ensureListContains(t, dirs, "bin/foo")
+	ensureListContains(t, dirs, "bin/foo/bar")
 }
 
 func TestUseVendor(t *testing.T) {