[QoS] Add API test for create port with admin's QoS policy

This patch adds API test which checks if regular user can
create port in own network if this network has got QoS policy
configured by admin and this QoS policy belongs to admin.

Issue with such scenario was reported in related bug.

Change-Id: I08f337f3bf786ae66f57d48ec8698845ac568b97
Related-Bug: #1750591
Depends-On: I464888ca3920b42edd6ab638f6a317ee51ef0994
1 file changed