FIX: Set the hue range for the default lookup table.

The old lookup table would not show up anything on the screen.

Change-Id: I9eabbdc0b7e218e2ac9979d132549a6a647b8f32
Merge topic 'pv-plot-bar-lut' into master

bf8a001b FIX: Set the hue range for the default lookup table.