wifi: Create test apex for install tests

Also, remove redundnat "required" tag in the apex.

Bug:  146163587
Test: atest wifi_e2e_tests
Change-Id: I13baa920725375379de06c12f12ee07bd8d57460
3 files changed
tree: 5d5501aeb7823f2013d0c4b514419866a8f04ab1
  1. apex/
  2. service/
  3. PREUPLOAD.cfg