[VTS] Use genrule to generate ltp test config

Bug: 154446791
Test: atest vts_ltp_test_arm_64
Change-Id: Ib08200f82e53e4fbaba4890356b96410626cd8b9
Merged-In: Ib08200f82e53e4fbaba4890356b96410626cd8b9
9 files changed