[vts-core] Add vts_core_liblp_test to vts-core

Add vts_core_liblp_test to vts-core suite and skip the test if the
first-api-level < 29.

Bug: 132702215
Test: atest vts_core_liblp_test
Change-Id: I09ea8ff923b5300bae513146f6d07dc029d36661
2 files changed