scripts/send-error-report: simple hack to use proxy from the enviroment
People behind a proxy couldn't send an error report to an upstream server,
this should fix the issue if they use a proxy that doesn't require authentication,
or one that uses basic http authentication and it's correctly exported in the enviroment.
Signed-off-by: Stefan Stanacar <stefanx.stanacar@intel.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>