Support multi-package sessions.

When submitting multi-package sessions, the caller will also pass the
ids of the child sessions. In that case, the main session has to be
treated only as a meta-session, and the child session ids are used to
retrieve the packages.

Bug: 118865310
Test: atest apexservice_test; verified that at boot the sessions are
scanned and marked as failed if something goes wrong.
Test: atest apex_e2e_tests
Change-Id: I07e39500f74adc4f975edbd72008b174996e13eb
10 files changed
tree: 8e3b784f7a2a590418314d094d4444f5f9a3cee4
  1. apexd/
  2. apexer/
  3. proto/
  4. tests/
  5. OWNERS
  6. PREUPLOAD.cfg