Adding an option to pull signature directly from file.

ApkParser has a way to quickly obtain signature without hopping through
multiple services.

Test: builds
Bug: b/136132412 b/133435829
Change-Id: I17e9a9d22dde41c52b475d7093f588bbbf6c29d0
2 files changed
tree: 4500c6f7f07f10ff6e4b1e40f44ca739fd3a6ed8
  1. incfs/
  2. libdataloader/
  3. .clang-format
  4. PREUPLOAD.cfg