Patch for gcc 6 and incorrect template function overload resolution for string_view.
Patch for gcc 6 and incorrect template function overload resolution for string_view.

duke8253/trafficserver,davidbz/trafficserver,dyrock/trafficserver,dyrock/trafficserver,persiaAziz/trafficserver,SolidWallOfCode/trafficserver,pbchou/trafficserver,bryancall/trafficserver,chitianhao/trafficserver,bryancall/trafficserver,chitianhao/trafficserver,persiaAziz/trafficserver,SolidWallOfCode/trafficserver,davidbz/trafficserver,bryancall/trafficserver,pbchou/trafficserver,dyrock/trafficserver,vmamidi/trafficserver,persiaAziz/trafficserver,vmamidi/trafficserver,dyrock/trafficserver,chitianhao/trafficserver,pbchou/trafficserver,davidbz/trafficserver,SolidWallOfCode/trafficserver,dyrock/trafficserver,duke8253/trafficserver,davidbz/trafficserver,duke8253/trafficserver,chitianhao/trafficserver,vmamidi/trafficserver,pbchou/trafficserver,SolidWallOfCode/trafficserver,SolidWallOfCode/trafficserver,pbchou/trafficserver,dyrock/trafficserver,SolidWallOfCode/trafficserver,vmamidi/trafficserver,bryancall/trafficserver,persiaAziz/trafficserver,vmamidi/trafficserver,davidbz/trafficserver,persiaAziz/trafficserver,chitianhao/trafficserver,SolidWallOfCode/trafficserver,duke8253/trafficserver,pbchou/trafficserver,persiaAziz/trafficserver,chitianhao/trafficserver,bryancall/trafficserver,bryancall/trafficserver,davidbz/trafficserver,persiaAziz/trafficserver,persiaAziz/trafficserver,duke8253/trafficserver,vmamidi/trafficserver,duke8253/trafficserver,dyrock/trafficserver,duke8253/trafficserver,chitianhao/trafficserver