Fixes various crashers loading/reloading parent.config
Fixes various crashers loading/reloading parent.config

Fixes issue #5976

SolidWallOfCode/trafficserver,vmamidi/trafficserver,duke8253/trafficserver,vmamidi/trafficserver,pbchou/trafficserver,bryancall/trafficserver,SolidWallOfCode/trafficserver,pbchou/trafficserver,duke8253/trafficserver,vmamidi/trafficserver,duke8253/trafficserver,pbchou/trafficserver,bryancall/trafficserver,duke8253/trafficserver,SolidWallOfCode/trafficserver,SolidWallOfCode/trafficserver,vmamidi/trafficserver,bryancall/trafficserver,bryancall/trafficserver,vmamidi/trafficserver,bryancall/trafficserver,bryancall/trafficserver,duke8253/trafficserver,duke8253/trafficserver,vmamidi/trafficserver,pbchou/trafficserver,SolidWallOfCode/trafficserver,SolidWallOfCode/trafficserver,pbchou/trafficserver,pbchou/trafficserver,SolidWallOfCode/trafficserver,duke8253/trafficserver