[release-1.22] cni: fix k/v pairs in UDS logging from plugin

[istio-testing]

Manual cherrypick required.

#51546 failed to apply on top of branch "release-1.22":

Applying: cni: fix k/v pairs in UDS logging from plugin
Using index info to reconstruct a base tree...
M	cni/pkg/log/uds.go
M	cni/pkg/log/uds_test.go
Falling back to patching base and 3-way merge...
Auto-merging cni/pkg/log/uds_test.go
CONFLICT (content): Merge conflict in cni/pkg/log/uds_test.go
Auto-merging cni/pkg/log/uds.go
CONFLICT (content): Merge conflict in cni/pkg/log/uds.go
error: Failed to merge in the changes.
hint: Use 'git am --show-current-patch=diff' to see the failed patch
Patch failed at 0001 cni: fix k/v pairs in UDS logging from plugin
When you have resolved this problem, run "git am --continue".
If you prefer to skip this patch, run "git am --skip" instead.
To restore the original branch and stop patching, run "git am --abort".