router: always set backend request scheme in proxy.ReverseProxy to 'http'
router: always set backend request scheme in proxy.ReverseProxy to 'http'

The inbound scheme may be http or https, but only http is supported on
the backend.

Signed-off-by: Ben Burkert <73675debcd8a436be48ec22211dcf44fe0df0a64@benburkert.com>

ozum/flynn,benbjohnson/flynn,TribeMedia/flynn,philiplb/flynn,whouses/flynn,josephglanville/flynn,ozum/flynn,TribeMedia/flynn,benbjohnson/flynn,benbjohnson/flynn,pkdevbox/flynn,philiplb/flynn,philiplb/flynn,TribeMedia/flynn,whouses/flynn,flynn/flynn,philiplb/flynn,supermario/flynn,flynn/flynn,pkdevbox/flynn,whouses/flynn,josephglanville/flynn,felixrieseberg/flynn,lmars/flynn,GrimDerp/flynn,GrimDerp/flynn,shads196770/flynn,ozum/flynn,justintung/flynn,schatt/flynn,pkdevbox/flynn,flynn/flynn,TribeMedia/flynn,pkdevbox/flynn,clifff/flynn,Brandywine2161/flynn,tonicbupt/flynn,tonicbupt/flynn,rikur/flynn,arekkas/flynn,tonicbupt/flynn,kgrz/flynn,lmars/flynn,technosophos/flynn,rikur/flynn,rikur/flynn,whouses/flynn,lmars/flynn,shads196770/flynn,jzila/flynn,shads196770/flynn,flynn/flynn,supermario/flynn,technosophos/flynn,schatt/flynn,kgrz/flynn,philiplb/flynn,jzila/flynn,arekkas/flynn,whouses/flynn,josephglanville/flynn,tonicbupt/flynn,felixrieseberg/flynn,Brandywine2161/flynn,tonicbupt/flynn,arekkas/flynn,arekkas/flynn,shads196770/flynn,lmars/flynn,GrimDerp/flynn,technosophos/flynn,pkdevbox/flynn,ozum/flynn,jzila/flynn,jzila/flynn,ozum/flynn,Brandywine2161/flynn,benbjohnson/flynn,justintung/flynn,jzila/flynn,benbjohnson/flynn,ozum/flynn,GrimDerp/flynn,clifff/flynn,justintung/flynn,arekkas/flynn,jzila/flynn,clifff/flynn,felixrieseberg/flynn,felixrieseberg/flynn,lmars/flynn,schatt/flynn,shads196770/flynn,flynn/flynn,shads196770/flynn,justintung/flynn,supermario/flynn,Brandywine2161/flynn,kgrz/flynn,supermario/flynn,TribeMedia/flynn,josephglanville/flynn,pkdevbox/flynn,GrimDerp/flynn,rikur/flynn,Brandywine2161/flynn,justintung/flynn,TribeMedia/flynn,kgrz/flynn,supermario/flynn,schatt/flynn,clifff/flynn,clifff/flynn,josephglanville/flynn,kgrz/flynn,technosophos/flynn,supermario/flynn,whouses/flynn,technosophos/flynn,GrimDerp/flynn,rikur/flynn,felixrieseberg/flynn,benbjohnson/flynn,clifff/flynn,schatt/flynn,schatt/flynn,justintung/flynn,Brandywine2161/flynn,rikur/flynn,josephglanville/flynn,kgrz/flynn