The wget default is a 900 second timeout and 20 retries. This is way too long
for most of our usecases so this patch changes it to a 30 second timeout and
reduces retries from 5 to 2. We have good mirror infrastructure, this will
let us fall back to it easier.
(From OE-Core rev: dbb88617576ea9bbeec08f5e5e15c26c4c18347f)
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>