previously used package_qa_check_src_uri was triggered during
package_qa stage, which implies having packages.
This isn't the case for native-only recipes or recipe that inherit
nopackages.
Still the checks performed (src-uri-bad) apply to those as well.
Therefore move the check from package_qa stage to unpack stage.
Signed-off-by: Konrad Weihmann <kweihmann@outlook.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
