Merge changes from topic "rs_vndk_step3"

* changes:
  Tests are run with proper namespace configs by their locations
  Fix: make vndk namespace visible for 2016 Pixes
  vndk: remove vendor/lib from the search path of the 'vndk' namespace
  libz is back to LLNDK
  Make the rs namespace visible
  Add libft2.so to ll-ndk for rs namespace
  Move libz vndk-sp from ll-ndk