Comment 14 for bug 2017748

After carefully reviewing many patches, I finally backported the following 3 patches to Yoga.

[PATCH 1/3] 686698284b Update tap ip in metadata agent when metadata port ip updated
[PATCH 2/3] 6205158831 ovn-metadata: Refactor events
[PATCH 3/3] b992d639b9 Handle creation of Port_Binding with chassis set

I didn't backport the following patch edf48e46a1,

edf48e46a1 Improve agent provision performance for large networks

as doing so will introduce more dependent patches. Since we opted not to backport this patch, we have to address the code conflict within the provision_datapath function in patch 6205158831. The process of resolving code conflicts for this backport can be found here - https://paste.ubuntu.com/p/2V3SXVvsHx/

Due to the absence of a local reproducer, I only built a test package [1] and verified basic network functions. The test results [2] indicate successful functionality.

[1] https://launchpad.net/~zhhuabj/+archive/ubuntu/focal-yoga-test
[2] https://paste.ubuntu.com/p/m9vp3TJgyv/