match on Node controller ref in NNC event predicate

[rbtr]

Signed-off-by: Evan Baker rbtr@users.noreply.github.com

Reason for Change:

Fixes potential race condition where, since NNCs are named using the Node name:

• a Node named X could be deleted,
• its NNC might not (yet) be garbage collected,
• CNS starting on a new Node also named X might fetch that stale NNC and assign IPs from it.

this could result in IP leaks/pod connectivity disruptions when the stale NNC eventually gets GC'd and the new one for that node is created.

Issue Fixed:

Requirements:

• uses conventional commit messages
• includes documentation
• adds unit tests

Notes: