Configure backing device max_ratio for FUSE filesystems. am: a485006ab1 am: bb8a543e43 am: cf0499038f am: 8fe09fd13e

Original change: https://googleplex-android-review.googlesource.com/c/platform/system/vold/+/12024019

Change-Id: I0d201a35d2b9162600a447062d82e5e969f3ca9f