Add a test covering attempt to stage a flattened apex

The implementation is a little bit hacky in a sense, that it uses
ApexServiceActivationSuccessTest to first mount a non-flattened apex,
then treats a mount point as a flattened apex and tries to stage it.

Test: apexservice_test
Bug: 124219359
Fixes: 124219359
Change-Id: Iade01876851d68c327a89c2415c1b931a5d684ad
Merged-In: Iade01876851d68c327a89c2415c1b931a5d684ad
(cherry picked from commit a67b3cd8c1df8ce043a237e04eeddff92919f5ee)
1 file changed
tree: 468fcccc24f6ce1f84983efb1aefc02f4e667378
  1. apexd/
  2. apexer/
  3. proto/
  4. shim/
  5. tests/
  6. CleanSpec.mk
  7. OWNERS
  8. PREUPLOAD.cfg