9336d9e13b
Alongside SIGNATURE and ACTOR_SIGNATURE policies, add CONFIG_SIGNATURE policy to overlayable that overlay fulfills if it is signed with the same certificate as the reference package whose package name is declared in 'config-signature' tag of SystemConfig and is vetted by OMS that it's a system pre-installed package. BUG: 158726924 TEST: regular aapt2, idmap2, OMS tests Change-Id: I645ee72271496008742886274be0d63a2985201b