Move wifi setup script from main to late_start

Bug: 17358965
Change-Id: Ia4d2d99228cdf4a253c6ce06db7b621c618634cb
Merge tag 'android-5.0.2_r1' of https://android.googlesource.com/device/lge/mako into lollipop

Android 5.0.2 release 1