Tie Colorado OAP asset limit to SSI

Currently a separate parameter, but [C.R.S. 26-2-111](https://advance.lexis.com/documentpage/?pdmfid=1000516&crid=a19534a1-2a50-48b9-a1c8-c6800800960a&config=014FJAAyNGJkY2Y4Zi1mNjgyLTRkN2YtYmE4OS03NTYzNzYzOTg0OGEKAFBvZENhdGFsb2d592qv2Kywlf8caKqYROP5&pddocfullpath=%2Fshared%2Fdocument%2Fstatutes-legislation%2Furn%3AcontentItem%3A662M-2CD3-GXF6-80SP-00008-00&pdcontentcomponentid=234176&pdteaserkey=sr9&pditab=allpods&ecomp=bs65kkk&earg=sr9&prid=8611c23e-3c5e-4423-bb96-ce9149909453) states:

> (2) Old age pension.
> (a)  Except as provided in paragraphs (c) and (d) of this subsection (2), public assistance in the form of the old age pension shall be granted to any person who meets the requirements of subsection (1) of this section and any one of the following requirements:
> (I) The person is a United States citizen or a qualified alien, has attained the age of sixty years or more, and **meets the resource eligibility requirements of the federal supplemental security income program**; or