Set the container field of aconfig flags

Test: m droid
Bug: 312769710
Change-Id: I44c02edb99f57389e4407891248ee254309e1e9e
diff --git a/flags/ranging.aconfig b/flags/ranging.aconfig
index 1be1b6e..9ab3d4f 100644
--- a/flags/ranging.aconfig
+++ b/flags/ranging.aconfig
@@ -1,4 +1,5 @@
 package: "com.android.bluetooth.flags"
+container: "com.android.btservices"
 
 flag {
     name: "channel_sounding"