Added ojnipap function to search in external_key
Added ojnipap function to search in external_key

Added an API call to search in the external_key attribute of prefixes.

fredsod/NIPAP,SpriteLink/NIPAP,SoundGoof/NIPAP,plajjan/NIPAP,garberg/NIPAP,ettrig/NIPAP,bbaja42/NIPAP,garberg/NIPAP,SpriteLink/NIPAP,SpriteLink/NIPAP,bbaja42/NIPAP,fredsod/NIPAP,plajjan/NIPAP,fredsod/NIPAP,ettrig/NIPAP,bbaja42/NIPAP,garberg/NIPAP,fredsod/NIPAP,plajjan/NIPAP,SpriteLink/NIPAP,plajjan/NIPAP,ettrig/NIPAP,garberg/NIPAP,ettrig/NIPAP,garberg/NIPAP,SoundGoof/NIPAP,plajjan/NIPAP,bbaja42/NIPAP,SoundGoof/NIPAP,SoundGoof/NIPAP,SpriteLink/NIPAP,ettrig/NIPAP,SpriteLink/NIPAP,SoundGoof/NIPAP,ettrig/NIPAP,bbaja42/NIPAP,SoundGoof/NIPAP,fredsod/NIPAP,plajjan/NIPAP,fredsod/NIPAP,bbaja42/NIPAP,garberg/NIPAP