Change I6226cc8ebe48acc03a62309efec2ab205549e0fb has a few deficiencies
in the models and test consistency. Improve the tests before we start
addressing the issues.
JIRA: YANGTOOLS-1473
Change-Id: Ie1f4e5fa99a8258abe09c005d352dd971a98c051
Signed-off-by: Ruslan Kashapov <ruslan.kashapov@pantheon.tech>
Signed-off-by: Robert Varga <robert.varga@pantheon.tech>
(cherry picked from commit
3882dd90f1af909696a4e1ebad57aae1282cf956)