The ornamental design for a luminaireendcaps, as shown and described.
FIG. 1 is a top perspective view of the luminaire endcaps of the present invention;
FIG. 2 is a front view of the luminaire endcaps of FIG. 1;
FIG. 3 is a rear view of the luminaire endcaps of FIG. 1;
FIG. 4 is a right side elevation view of the luminaire endcaps of FIG. 1, a left side elevation view thereof being a mirror image of the right side elevation view;
FIG. 5 is a top view of the luminaire endcaps of FIG. 1; and,
FIG. 6 is a bottom view of the luminaire endcaps of FIG. 1.
The broken lines showing environmental structure are for illustrative purposes only and form no part of the claimed design.