Mix the mayonnaise, vinegar, milk and sugar. Toss with the coleslaw mix and set aside. Lay out 2 slices of the black forest ham,so that they are only slightly overlapping. Next,layer 3 slices of salami down the center,also only slightly overlapping. Repeat with 2 slices of havarti cheese. Spread 1/2 cup of the coleslaw down the center. Roll up.