Fix YANG patch request for augmented element
When writing JSON data using yangtool's NormalizedNodeStreamWriter
we have to check if the result is instance of Augmentation.
In that case we have to use its child as data. Similar process
is applied in JsonNormalizedNodeBodyReader.
JIRA: NETCONF-747
Change-Id: I2c1d1abcd3cbb483b414408c2c768bdc5731b8ce
Signed-off-by: OleksandrZharov <Oleksandr.Zharov@pantheon.tech>
Signed-off-by: Ivan Hrasko <ivan.hrasko@pantheon.tech>
Signed-off-by: Yaroslav Lastivka <yaroslav.lastivka@pantheon.tech>