bb.utils.export_proxies() is a poor-man's alternative for the
environment setup code in bb/fetch2, but it's used in several places
where recipes want to download manually (such as cve-update-db-native).
Notably, export_proxies() doesn't pass on the SSL certificate paths from
the original environment, so if SSL_CERT_FILE needs to be set (for
example, in a buildtools environment) then proxies work but SSL doesn't.
In an ideal world export_proxies and the same logic in fetch2 would
merge, but until then we can add the SSL_CERT_ variables and duplicate
the basic logic: check the datastore first and then the original
environment for variables.
Also remove the return value as nothing ever checked it.
[ YOCTO #15000 ]
(Bitbake rev: ed0dcc40f80c48839bac20298013d70043858a4e)
Signed-off-by: Ross Burton <ross.burton@arm.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>