Rename vts-core to vts

Bug: 151896491
Test: local build
Exempt-From-Owner-Approval: This CL moves all tests in vts-core to vts.
It won't change test logic or behavior.

Change-Id: I11ac1cc124cf145d4df910101e378c433d1d5680
Merged-In: I11ac1cc124cf145d4df910101e378c433d1d5680
1 file changed