Add core-libart-for-host and okhttp-for-host to sdk

Moves core-libart and okhttp to the art-module-sdk's java_boot_libs
property and adds core-libart-for-host and okhttp-for-host to the
art-module-test-exports.

Bug: 185789034
Test: m robolectric_android-all-device-deps layoutlib
Change-Id: I8bd25a87bdad89014a57390f058f55af3e125a0a
1 file changed