Bug 762: Fixed incorrect xmls used for regression testing.

XMLs used for Restconf Testing contained incorrect
<flags> tag, which resulted in returning
400 HTTP Status and preventing data to be commited.

These xmls were not used to test negative scenarios
but positive one, so they should not be incorrect.

Signed-off-by: Tony Tkacik <ttkacik@cisco.com>
(cherry picked from commit e9ee042b16d7e515d2e574ee478d38a621dd95e3)

Change-Id: I3fecf7cceebd5100c174b86bf4261a8ab2fd3e52
Signed-off-by: Luis Gomez <ecelgp@gmail.com>