update existing iic commands for random raster observation

So here is how iic will be called in the context of random raster.

Once we observed pfsDesignId0, we stop the rotator then we need to move the cobras to the first variant.

• iic declareCurrentPfsDesign designId=pfsDesignId0 variant=1..n
• iic moveToPfsDesign noHome

I just basically need to add knobs to those existing commands.