Only load Locker worker iframe if host is not full path
Only load Locker worker iframe if host is not full path

@rev cpatino@
@bug W-2943804@

badlogicmanpreet/aura,forcedotcom/aura,badlogicmanpreet/aura,madmax983/aura,madmax983/aura,forcedotcom/aura,forcedotcom/aura,madmax983/aura,forcedotcom/aura,badlogicmanpreet/aura,badlogicmanpreet/aura,madmax983/aura,madmax983/aura,forcedotcom/aura,madmax983/aura,badlogicmanpreet/aura,badlogicmanpreet/aura