Fix a bug in ConfigManager class
Use geomtk::ConfigManager to get configurations
Squashed 'tools/geomtk/' changes from c8cd1c3..1e6900d

1e6900d Add check codes for unregistered field in IOManager class
7368260 Add ConfigManager class

git-subtree-dir: tools/geomtk
git-subtree-split: 1e6900d66c5854f6b08eee31b16f8e7b22e8abda
Merge commit '9acafd76d242d51b714cddcdfdfed727720a28e4' into cmor

Conflicts:
	tools/geomtk/CMakeLists.txt
	tools/geomtk/src/Utils/ConfigManager.cpp
	tools/geomtk/src/Utils/test/test.config