TS-3956: Header_rewrite applies strange logic with = operator, remove %{} which breaks printf
TS-3956: Header_rewrite applies strange logic with = operator, remove %{} which breaks printf

clearswift/trafficserver,chitianhao/trafficserver,davidbz/trafficserver,dyrock/trafficserver,reveller/trafficserver,PSUdaemon/trafficserver,rahmalik/trafficserver,taoyunxing/trafficserver,pbchou/trafficserver,rahmalik/trafficserver,rahmalik/trafficserver,taoyunxing/trafficserver,persiaAziz/trafficserver,rpufky/trafficserver,PSUdaemon/trafficserver,persiaAziz/trafficserver,rpufky/trafficserver,duke8253/trafficserver,pbchou/trafficserver,bryancall/trafficserver,vmamidi/trafficserver,reveller/trafficserver,taoyunxing/trafficserver,duke8253/trafficserver,pbchou/trafficserver,reveller/trafficserver,persiaAziz/trafficserver,pbchou/trafficserver,rpufky/trafficserver,PSUdaemon/trafficserver,vmamidi/trafficserver,rahmalik/trafficserver,persiaAziz/trafficserver,chitianhao/trafficserver,duke8253/trafficserver,PSUdaemon/trafficserver,rahmalik/trafficserver,persiaAziz/trafficserver,reveller/trafficserver,SolidWallOfCode/trafficserver,reveller/trafficserver,chenglongwei/trafficserver,dyrock/trafficserver,taoyunxing/trafficserver,persiaAziz/trafficserver,rahmalik/trafficserver,pbchou/trafficserver,chenglongwei/trafficserver,vmamidi/trafficserver,clearswift/trafficserver,bryancall/trafficserver,reveller/trafficserver,taoyunxing/trafficserver,vmamidi/trafficserver,PSUdaemon/trafficserver,davidbz/trafficserver,chenglongwei/trafficserver,vmamidi/trafficserver,rpufky/trafficserver,duke8253/trafficserver,reveller/trafficserver,chitianhao/trafficserver,SolidWallOfCode/trafficserver,pbchou/trafficserver,PSUdaemon/trafficserver,dyrock/trafficserver,clearswift/trafficserver,taoyunxing/trafficserver,SolidWallOfCode/trafficserver,taoyunxing/trafficserver,dyrock/trafficserver,SolidWallOfCode/trafficserver,rpufky/trafficserver,rpufky/trafficserver,clearswift/trafficserver,chitianhao/trafficserver,bryancall/trafficserver,davidbz/trafficserver,chenglongwei/trafficserver,duke8253/trafficserver,reveller/trafficserver,chitianhao/trafficserver,clearswift/trafficserver,SolidWallOfCode/trafficserver,chitianhao/trafficserver,persiaAziz/trafficserver,duke8253/trafficserver,rpufky/trafficserver,davidbz/trafficserver,davidbz/trafficserver,rpufky/trafficserver,reveller/trafficserver,taoyunxing/trafficserver,taoyunxing/trafficserver,davidbz/trafficserver,clearswift/trafficserver,vmamidi/trafficserver,bryancall/trafficserver,persiaAziz/trafficserver,bryancall/trafficserver,SolidWallOfCode/trafficserver,PSUdaemon/trafficserver,chenglongwei/trafficserver,chenglongwei/trafficserver,bryancall/trafficserver,rpufky/trafficserver,rahmalik/trafficserver,dyrock/trafficserver,dyrock/trafficserver,SolidWallOfCode/trafficserver,chenglongwei/trafficserver,PSUdaemon/trafficserver,dyrock/trafficserver,chenglongwei/trafficserver,clearswift/trafficserver,duke8253/trafficserver,rahmalik/trafficserver,clearswift/trafficserver,chitianhao/trafficserver,PSUdaemon/trafficserver,clearswift/trafficserver,rahmalik/trafficserver