Add "dl_path" to download the source tarball.
Add "src_files" to copy local files to build directory.
Copy patches to deb_folder/patches, and remove the patching commands
from rules.
Remove dl_hook.
Test Plan:
Pass: successfully build portieris-helm
Pass: No difference comparing with the result of dl_hook
Story: 2009101
Task: 43845
Signed-off-by: Yue Tao <Yue.Tao@windriver.com>
Change-Id: I128bac3c74e791458d4fcac6d437653abc322206