ML2 hierarchical port binding needs additional tests

[Robert Kukura]

Although the current unit tests cover the hierarchical port binding code reasonably well, additional tests are needed that verify the following:

* Binding loops are properly avoided
* Binding limit is detected
* Dead-end binding attempts are handled properly

[Federico Ressi (federico-ressi-9)]

This bug has been here for a long time. What is its state? Is still valid? Specifications doesn't look to clear to me.

* Binding loops are properly avoided
What do you mean with this? How can this happen?

* Binding limit is detected
What do you mean with this? How can this happen?

* Dead-end binding attempts are handled properly
What do you mean with this? How can this happen?

[Federico Ressi (federico-ressi-9)]

@Robert Kukura: you should update this, fix this or unassigne yourself from this to allow others taking it.

[Federico Ressi (federico-ressi-9)]

I have submitted a fix for this bug:https://review.openstack.org/#/c/289863/
Looking for reviewers.

[OpenStack Infra (hudson-openstack)]

Change abandoned by Federico Ressi (<email address hidden>) on branch: master
Review: https://review.openstack.org/289863
Reason: The effort of taking it to be accepted doesn't pay the amount of change I understood have been asked for.

[Armando Migliaccio (armando-migliaccio)]

This bug is > 180 days without activity. We are unsetting assignee and milestone and setting status to Incomplete in order to allow its expiry in 60 days.

If the bug is still valid, then update the bug status.

[Launchpad Janitor (janitor)]

[Expired for neutron because there has been no activity for 60 days.]