Pass SElinux info to installd dexopt

For secondary dex files, the oat directory is created on the fly. We
need to make sure we restore the SElinux context after the oat files are
generated. To do that we need to pass the app SElinux info to installd
dexopt.

Bug: 36896515
Test: adb shell cmd package compile -r bg-dexopt --secondary-dex com.google.android.gms
      adb shell ls
/data/user_de/0/com.google.android.gms/app_chimera/m/0000000c/oat/arm64/
-Z
      youtube loads gms modules without extracting from apk

Change-Id: I5be34b42a509701f6222ca52bec4761c161ec6eb