Enable app image startup cache for preopted apps

To get performance benefits here for apps that aren't installed
through the play store.

Bug: 130217075
Bug: 131310042
Test: make

(cherry picked from commit 8910722e)

Merged-In: I46dc3e4a588be52f359577ca1f0fd2dcd440c4bf
Change-Id: Ia98c4e5447b63f6362a4bd5c617a518784f0ef53