experiments_2018_mesas_exposure: OpenCV assertion fail in experiment no. 4

[jiriUlr]

While running adaptive map tests on the day/night dataset (test no. 4 in process.sh), those errors occured many times:

[ERROR] [1536061695.866558917]: Feature desriptors from the map and in from the image are not compatible.
OpenCV Error: Assertion failed (type == src2.type() && src1.cols == src2.cols && (type == 5 || type == 0)) in batchDistance, file /tmp/binarydeb/ros-kinetic-opencv3-3.3.1/modules/core/src/stat.cpp, line 4022

Suggested solution by @halodluc which seems to work is to change arguments of function configureFeatures() on lines no. 228 in autoRemapTest.cpp and no. 234 in tester.cpp
from configureFeatures(2,2) to configureFeatures(3,2)