Rosemary Turkey Roast with Vegetables

Name: Rosemary Turkey Roast with Vegetables
Ingredients: 1 teaspoon dried rosemary, crushed; ¼ teaspoon salt; ¼ teaspoon garlic powder; ¼ teaspoon dried thyme, crushed; ¼ teaspoon ground pepper; 1 (2 3/4 to 3 1/4 pound) turkey breast half with bone, skinned; 1 tablespoon vegetable oil; 1 ¼ pounds new potatoes, halved; 8 medium carrots, peeled and cut into 2- to 3-inch-long pieces; 1 large onion, cut into 1/2-inch wedges; ¼ cup reduced-sodium chicken broth; Reduced-sodium chicken broth; ¼ cup all-purpose flour; Ground pepper