Las Vegas Raiders general manager John Spytek often uses the word “versatility” when discussing his favorite traits in potential draft targets. That preference was evident in his selections on Friday. The Raiders moved back two spots in the second round in a trade with the Houston Texans to select Treydan Stukes of Arizona with the 38th pick. Stukes is a potential option at safety who has played both outside corner and nickel in his collegiate career. The Raiders used the additional third-round pick (No. 91 overall) they acquired in that deal to add Texas A&M’s Trey Zuhn , who played both tackle and center last year and probably projects as a guard at the NFL level. In between, they picked up Auburn defensive end Keyron Crawford who has high-end pass rushing traits and a relentless motor against the run with the 67th pick. “Versatility is part of it for sure,” Spytek said after the second and third rounds had concluded. “But they’re just really good football players that are selfless.…