BUG 1204 - exception if multiple container node occures

Container schema node + multiple data nodes ->
 exception RestconfDocumentedException is raised.
List schema node + one data node (e. g. in json is specified as container
"list-name":{} and not "list-name":[{},{}...,{}] -> this is acceptable case because
list can have even only one entry.
Leaf schema node + multiple data nodes -> special check whether at
equal objects is everytime uniqe key. If it isn't so then
RestconfDocumentedException is raised. For Json specific JsonParser was
implemented which is catch duplicity at object level an time of parsing.
For XML this duplicity name check is done during normalization phase.

Change-Id: I0b544c015bcf817e82206276bd24c783093308d6
Signed-off-by: Jozef Gloncak <jgloncak@cisco.com>
Bug 1224, Bug 1221: Added Test case scenarios for Data Change Events.

Added suite of test-cases which tests Data Change Events
and their contents for various combination of
  - initial state of data store
  - performed operation (e.g. write sibling, child, delete child)
  - various level of data change listener
    eg. (/top or /top/top-level-list/top-level-list[*])
  - various data change scope (BASE, ONE, SUBTREE)

Change-Id: Ic43ba3863e2954574ddec946f33512021839acfd
Signed-off-by: Tony Tkacik <ttkacik@cisco.com>
Merge "BUG 1204 - exception if multiple container node occures"
Merge "Bug 1224, Bug 1221: Added Test case scenarios for Data Change Events."