The ornamental design for a kegassembly, as shown and described.
FIG. 1 is a top front perspective view of a keg assembly showing my new design;
FIG. 2 is a bottom front perspective view thereof;
FIG. 3 is a front view thereof;
FIG. 4 is a back view thereof;
FIG. 5 is a right side view thereof;
FIG. 6 is a left side view thereof;
FIG. 7 is a bottom view thereof; and,
FIG. 8 is a top view thereof.
The broken lines shown in the figures are for the purpose of illustrating portions of the keg assembly which form no part of the claimed design. Additionally, the keg assembly is shown with a symbolic break in its length, designated by the dot-dashed lines along the sides of the keg assembly. The appearance of any portion of the article between the dot-dashed lines forms no part of the claimed design.