Merge "Move log_fd and composite_disks into CrosvmConfig." am: cb461548fb am: 73b247ffe9

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Virtualization/+/1821652

Change-Id: I5283444aed830d9046b1a440ff43c9e6a8b0ad0c