Bug 3224 - Parsing data with choice in case via augmentation results in

Bug 3224 - Parsing data with choice in case via augmentation results in
incorrect parsing

* added tests for multiple choices from augmentation parsing
for json, xml and bindinging aware context
* modified json parsing tests
* fixed choice augmentation resolution in ChoiceNodeCodecContext
and CompositeNodeDataWithSchema
* moved findCorrespondingAugment to SchemaUtils since it is useful for
multiple Classes
* replaced getNodeIdentifierForAugmentation code in SchemaUtils  with
the one from CompositeNodeDataWithSchema.

Change-Id: Ibf57a771b92de14ecb70dcbbe250d7c559066882
Signed-off-by: Jan Hajnar <jhajnar@cisco.com>
(cherry picked from commit a8f512b80e661dac1ff85db6c16c72bfbf7f5891)