Bug 3024 - Restconf PUT exception when top level node is from

Bug 3024 - Restconf PUT exception when top level node is from
augmentation

* added check for PUT into JsonNormalizedNodeBodyReader. If method is
PUT then data are unwraped from augmentations/choice nodes
* added wrapping of augmentation nodes when using XmlNormalizedNodeBodyReader
* commented out check for namespace in createConfigurationData (it should be
moved to parse stage)
* both XmlNormalizedNodeBodyReader and JsonNormalizedNodeBodyReader
should now produce the same normalized node data and paths for
equivalent XML and JSON input.

Change-Id: I21f4594d20170f33177cbae00791b81f6ae640b2
Signed-off-by: Jan Hajnar <jhajnar@cisco.com>