microdroid is a minimal Linux image that we will use in VMs. Instead of
inventing a whole new Linux image from scratch, we design microdroid as
a stripped down version of the generic Android system image (GSI).
Bug: 177630284
Test: m microdroid
Test: no runtime test. This isn't mountable yet.
Change-Id: I528e9da2a0933e7d024f3606c82df585d029785c
Jiyong Park