This covers the 3 starting conditions (x<y<z, x<z<y, z<x<y) and the two permutations ('A' and 'B')
for each of these which do not include the starting permutation. They replace the original
Frame_order.test_axis_permutation system test with the tests
Frame_order.test_axis_perm_x_le_y_le_z_permA, Frame_order.test_axis_perm_x_le_y_le_z_permB,
Frame_order.test_axis_perm_x_le_z_le_y_permA, Frame_order.test_axis_perm_x_le_z_le_y_permB,
Frame_order.test_axis_perm_z_le_x_le_y_permA, and Frame_order.test_axis_perm_z_le_x_le_y_permB.
