libsnapshot: dump rollback indicator

Test: snapshotctl dump
Bug: 149956852
Change-Id: Ib0308ab75d6dce4047b46d06cece95eed23620a9
(cherry picked from commit 738a94b7985dabbcc091f130fcc28f3fa9bec8b3)
Merged-In: Ib0308ab75d6dce4047b46d06cece95eed23620a9
1 file changed