Chicken, Potato and Green Bean Salad

Adapted from Epicurious. 2 medium tomatoes, cut into 1/4 inch thick slices 3 cups water 1 whole chicken breast with skin and bones (about 1 1/4 pounds) 1 yellow onion, sliced 10 whole cloves 2 teaspoons salt 4 Yukon Gold potatoes 1/2 pound green beans, trimmed and...