Suge Knight made a death threat against famed “Straight Outta Compton” director F. Gary Gray … so claims the L.A. County Grand Jury which indicted Suge on felony criminal threats. Suge Knight allegedly made the threat during the filming of the movie, but months before he killed a man involved in the production by driving over him in a Compton parking lot. TMZ obtained a copy of the Grand Jury indictment, which reads in part, “On or about August 8, 2014, Suge … threatened to commit a crime which would result in death and great bodily injury to Felix Gary Gray.” Suge was extremely unhappy with his portrayal in the…