apexer: add --no_hashtree option

This option is passed to avbtool so that it can omit hashtree of the
payload image.

It is used by apex build rule when it is not Unbundled_build.

Bug: 139957269
Test: m {apex, e.g. com.android.resolv}
Test: jar -x --file $OUT/apex/com.android.resolv.apex
Test: avbtool info_image --image apex_payload.img
Test: check if tree size is zero
Change-Id: Ib2ef6e591df82a4826dba7d998cd81b7176d7bb1
1 file changed
tree: 7df8ce5141a2805695a53c164f5146454f662875
  1. apexd/
  2. apexer/
  3. docs/
  4. proto/
  5. shim/
  6. tests/
  7. CleanSpec.mk
  8. OWNERS
  9. PREUPLOAD.cfg