Network environment validation fails when accessing value
with the key 'os_net_config' from the nic-config files.
Fix the dictionary keys needed to fetch the network
config from nic_data.
Signed-off-by: Yadnesh Kulkarni <ykulkarn@redhat.com>
Change-Id: I2ec628dd9c9cf14c0cd9d8ba30f53ac18efe115f
(cherry picked from commit 930abb12b3)