Extract _store_outside_cert method.
Extract _store_outside_cert method.

When storing an outside certificate do an insert or update. If a row
exists for the member, update that row. If no row is present, insert a
new row.

MarshallBrinn/geni-ch,ahelsing/geni-ch,tcmitchell/geni-ch,MarshallBrinn/geni-ch,tcmitchell/geni-ch,ahelsing/geni-ch