sdk:enable emulator to launch in build environment

Recent changes in emulator requires advancedFeatures.ini,
encryptionkey.img and new kernels (such as 3.18) at OUT directory
so emulator can find them.

This CL set those up as part of the build process.

Change-Id: Iccaea540b2a27f45fd487dd25408b5d5c047171c
Merged-In: Ib3b7c4c48a22cecb44255e643402fd1c37797522