Merge "libsnapshot: Move ImageManager creation to DeviceInfo." am: 9ac43f5421 am: 260c7f6e3d

Original change: https://android-review.googlesource.com/c/platform/system/core/+/1705662

Change-Id: I88c8587d38550e8d33834fba6359a7344e8f2c8f