Make HAProxy's log format configurable
Make HAProxy's log format configurable

Users can use the environment varible `ROUTER_SYSLOG_FORMAT` to define
HAProxy's log format now.

kargakis/origin,luciddreamz/origin,aveshagarwal/origin,wjiangjay/origin,imcsk8/origin,rootfs/origin,elyscape/origin,sg00dwin/origin,chlunde/origin,matthyx/origin,ravisantoshgudimetla/origin,sdminonne/origin,louyihua/origin,rajatchopra/origin,louyihua/origin,rajatchopra/origin,mrogers950/origin,ramr/origin,spadgett/origin,liangxia/origin,mfojtik/origin,ryanj/origin,spadgett/origin,deads2k/origin,coreydaley/origin,elyscape/origin,rhcarvalho/origin,hroyrh/origin,luciddreamz/origin,juanvallejo/origin,sg00dwin/origin,imcsk8/origin,jim-minter/origin,juanvallejo/origin,tnozicka/origin,dgoodwin/origin,JacobTanenbaum/origin,csrwng/origin,Miciah/origin,smarterclayton/origin,smarterclayton/origin,danmcp/origin,louyihua/origin,wjiangjay/origin,markllama/origin,mdshuai/origin,detiber/origin,wanghaoran1988/origin,rajatchopra/origin,juanvallejo/origin,sallyom/origin,rhamilto/origin,dinhxuanvu/origin,abutcher/origin,elyscape/origin,jeremyeder/origin,abutcher/origin,hroyrh/origin,goern/origin,soltysh/origin,php-coder/origin,mahak/origin,rhamilto/origin,sferich888/origin,dinhxuanvu/origin,dobbymoodge/origin,PI-Victor/origin,PI-Victor/origin,ironcladlou/origin,xiuwang/origin,deads2k/origin,aveshagarwal/origin,mahak/origin,mfojtik/origin,maxamillion/origin,nhr/origin,php-coder/origin,louyihua/origin,mfojtik/origin,childsb/origin,liangxia/origin,PI-Victor/origin,sdminonne/origin,xiuwang/origin,rrati/origin,abutcher/origin,luciddreamz/origin,linzhaoming/origin,hferentschik/origin,kargakis/origin,ramr/origin,liangxia/origin,dgoodwin/origin,kargakis/origin,markllama/origin,hferentschik/origin,anpingli/origin,dcbw/origin,jwhonce/origin,mrogers950/origin,legionus/origin,markllama/origin,simo5/origin,rrati/origin,jpeeler/origin,ryanj/origin,matthyx/origin,markllama/origin,jupierce/origin,ravisantoshgudimetla/origin,liggitt/origin,mrogers950/origin,adelton/origin,gabemontero/origin,simo5/origin,enj/origin,ravisantoshgudimetla/origin,dcbw/origin,xiuwang/origin,ravisantoshgudimetla/origin,hferentschik/origin,legionus/origin,sjug/origin,openshift/origin,jpeeler/origin,legionus/origin,pweil-/origin,ironcladlou/origin,nhr/origin,maxamillion/origin,Miciah/origin,jim-minter/origin,php-coder/origin,akram/origin,ryanj/origin,ingvagabund/origin,spadgett/origin,sferich888/origin,luciddreamz/origin,detiber/origin,markllama/origin,php-coder/origin,anpingli/origin,JacobTanenbaum/origin,jpeeler/origin,coreydaley/origin,mdshuai/origin,rrati/origin,miminar/origin,dinhxuanvu/origin,aveshagarwal/origin,smarterclayton/origin,elyscape/origin,rhamilto/origin,jupierce/origin,maxamillion/origin,soltysh/origin,chlunde/origin,mdshuai/origin,rajatchopra/origin,miminar/origin,jsafrane/origin,nak3/origin,ryanj/origin,gabemontero/origin,mrogers950/origin,gabemontero/origin,rajatchopra/origin,mrogers950/origin,rootfs/origin,sjug/origin,chlunde/origin,wanghaoran1988/origin,wjiangjay/origin,pravisankar/origin,sg00dwin/origin,nhr/origin,simo5/origin,jsafrane/origin,matthyx/origin,PI-Victor/origin,nak3/origin,goern/origin,linzhaoming/origin,nhr/origin,markllama/origin,wanghaoran1988/origin,adelton/origin,rajatchopra/origin,jeremyeder/origin,csrwng/origin,rootfs/origin,jeremyeder/origin,sallyom/origin,dobbymoodge/origin,miminar/origin,juanvallejo/origin,spadgett/origin,abutcher/origin,deads2k/origin,ironcladlou/origin,sdminonne/origin,rrati/origin,jwhonce/origin,dcbw/origin,dgoodwin/origin,hferentschik/origin,bparees/origin,miminar/origin,ryanj/origin,abutcher/origin,pmorie/origin,rhcarvalho/origin,ramr/origin,rootfs/origin,akram/origin,coreydaley/origin,rhcarvalho/origin,dcbw/origin,imcsk8/origin,goern/origin,jwhonce/origin,matthyx/origin,ingvagabund/origin,ingvagabund/origin,pravisankar/origin,dobbymoodge/origin,tnozicka/origin,mdshuai/origin,rhcarvalho/origin,ravisantoshgudimetla/origin,jwhonce/origin,ryanj/origin,pecameron/origin,pmorie/origin,mdshuai/origin,rhamilto/origin,pecameron/origin,enj/origin,kargakis/origin,wjiangjay/origin,danmcp/origin,liangxia/origin,liggitt/origin,aveshagarwal/origin,JacobTanenbaum/origin,liggitt/origin,imcsk8/origin,childsb/origin,jpeeler/origin,openshift/origin,sjug/origin,jupierce/origin,adelton/origin,tnozicka/origin,pravisankar/origin,childsb/origin,simo5/origin,detiber/origin,mdshuai/origin,pweil-/origin,bparees/origin,imcsk8/origin,jupierce/origin,bparees/origin,sallyom/origin,childsb/origin,dinhxuanvu/origin,Miciah/origin,aveshagarwal/origin,akram/origin,jeremyeder/origin,raffaelespazzoli/origin,dcbw/origin,pravisankar/origin,childsb/origin,danmcp/origin,louyihua/origin,jim-minter/origin,pmorie/origin,jpeeler/origin,dinhxuanvu/origin,danmcp/origin,chlunde/origin,openshift/origin,kargakis/origin,rootfs/origin,liangxia/origin,PI-Victor/origin,pmorie/origin,mrogers950/origin,enj/origin,tnozicka/origin,linzhaoming/origin,detiber/origin,linzhaoming/origin,liangxia/origin,jsafrane/origin,mahak/origin,mkumatag/origin,dobbymoodge/origin,adelton/origin,dobbymoodge/origin,liggitt/origin,juanvallejo/origin,sg00dwin/origin,legionus/origin,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