microdroid: Narrow property permissions

microdroid's domains have been able to read/write any properties. That's
just for convenience while bringing up microdroid. This cleans up such
global permission and grants minimal access.

Bug: 194447534
Test: atest MicrodroidHostTestCases ComposHostTestCases
Test: run microdroid demo app
Change-Id: I09ce1174d4af9c228b788a522a6ab845cafd4505
14 files changed