Cookie parsing: avoid use of static values and keeping (possibly wrong) context
Cookie parsing: avoid use of static values and keeping (possibly wrong) context

The proxy could forward bad cookies values if there were no spaces before
the SOZUBALANCEID= cookie.

e.g: TEST=XX;SOZUBALANCEID=0 would only forward TEST=X to the backend, which is wrong

sozu-proxy/sozu,sozu-proxy/sozu,sozu-proxy/sozu