Merge "Pre-create userdata metadata encryption device." am: eb3182f040 am: af91a5ec2d am: a53bd16bc1 am: 598a02969f

Original change: https://android-review.googlesource.com/c/platform/system/vold/+/1833056

Change-Id: Idc962b724ee77d79b925064337e30df571ee2bbe