Sepolicy: Allow system_server_startup to load dalvikcache artifacts

Allow the startup domain to pick up integrity-checked artifacts
from the dalvik-cache. The corresponding framework code will
only load the system server classpath.

Bug: 128688902
Test: m
Test: manual
Change-Id: Ib37f8d7c39431e2792eeb4dac1cd732307519827
1 file changed