`prTeCoordinateToNameExampleTest` is randomly failing

Description

prTeCoordinateToNameExampleTest is randomly failing because it relies on network. Also discussed in !163 (merged).

Steps to reproduce

$ while :; do /otb-build/bin/CoordinateToNameExample 103.78 1.29 /otb-build/Testing/Temporary/CoordinateToNameExample.txt; done

Configuration information

all