Vanderpump Rules standoutAriana Madix is suing her cheating ex, Tom Sandoval,over their shared $2 million home. RadarOnline.com has observed the suit filed in Los Angeles on Friday, which shows Madix is filing for partition of real property by sale — meaning she wants a judge to force Sandoval to sell the house. Madix is begging a judge to force the sale of the five-bedroom, six-bathroom home in Valley Village, CA, and wants the proceeds divided fairly. As TMZ pointed out, Madix doesn’t want “division in kind,” which would allow them to retain their ownership interest in the property and poten…