Kleaf: init_ddk: Support for remote prebuiltscommon-android15-6.6

* This works by inferring the list of files to download using the
  information from downloads_config.json file distrubuted with the
  builds.

* Download method is expanded to support non-mandotory files, this is to
  not cause errors when files are not found in the build distribution.

Tested: python3 init.py --prebuilts_dir=/abs/path/to/gki_prebuilts \
          --build_id=<placeholder> --kleaf_repo=/abs/path/to/ACK \
	  --url_fmt="http://0.0.0.0:8000/{filename}"
Bug: 328770706
Change-Id: Ib198eadd8211e74d0f2f83b53f25c53b9ee5d209
Signed-off-by: Ulises Mendez Martinez <umendez@google.com>

1 files changed, 0 insertions, 0 deletions

diff --git a/build/kernel b/build/kernel
-Subproject 25a0acbc3a61273a088f36ff2cb2690d21338f8
+Subproject 973978c506539b812d363b02e98b517dad1ed6e