Allow zygote to relabel CE and DE dirs from tmpfs to system_data_file

Also, allow zygote to scan dirs in /mnt/expand and relabel.

Test: No denials at boot
Test: No denials seen when creating mounts
Bug: 143937733
Change-Id: I86e77d27f5e9fb2f5852f787c7e5d9179c7404aa
1 file changed