Replace "sys.fuse_snapshot" with "persist.sys.fuse"

With the newly added flag for Settings developer options, which is now
used to change the state of FUSE, PROP_FUSE now acts as the snapshot
feature flag for the current boot.

Bug: 145391093
Test: atest AdoptableHostTest
Change-Id: I22363b088e88c764294cbd61c6d94160c907fae3
4 files changed