Bethenny Frankel is dealing with a major health issue ... she says she was just diagnosed with stage 2 chronic kidney disease. The 'RHONY' star announced the health update Thursday on social media, encouraging folks to go see their doctor to get their blood work done. Bethenny says she was referred to a specialist after blood tests raised red flags with her kidney function ... and that's when she found out about her condition. It's interesting ... Bethenny says she's been told her chronic