use apex_test for test apexes

... so that the build system can distinguish testing APEXes and
installable APEXes, and apply different rules to them.

Bug: 146308764
Test: m
Change-Id: I4ca8f0bab10e98c2aed6760c682a7e493350cb22
1 file changed
tree: 8bcd6b806d78a57be6f1725b092cc2b512539bd1
  1. apex/
  2. service/
  3. PREUPLOAD.cfg