Rename ConfigurationPoint "instrumenation" to "augmentations". Unlike
WA2, in W3, instruments and result_porcessors are handled identically in
configuration (though there're still distinct pulgin types).
"instrumentation" and "result_porcessors" entries in configuration are
now aliases for the same configuration point, which is renamed to
"augmentations" to reflect the fact that it contains both types of
plugins.