Add jni_headers to hostsidetests

Preparation for removing implicit include paths for jni.h from soong.

Bug: 152482542
Test: m checkbuild
Change-Id: I2d1f144d625d533b4726d790682d3ab570cf961e
Merged-In: I2d1f144d625d533b4726d790682d3ab570cf961e
Exempt-From-Owner-Approval: build clean-up
(cherry picked from commit c41c9cdd99666136bae89f8f87f4807a9a655ffd)
4 files changed