enhance ipam

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 28.48485% with 236 lines in your changes missing coverage. Please review.

Project coverage is 21.38%. Comparing base (b408c2f) to head (5d4befe). Report is 4 commits behind head on main.

Files with missing lines	Patch %	Lines
pkg/eni/crdv2.go	28.44%	153 Missing and 3 partials :warning:
daemon/daemon.go	0.00%	53 Missing :warning:
pkg/controller/multi-ip/node/pool.go	53.84%	10 Missing and 2 partials :warning:
cmd/terway/main.go	0.00%	6 Missing :warning:
cmd/terway-controlplane/terway-controlplane.go	0.00%	5 Missing :warning:
plugin/driver/utils/utils.go	0.00%	3 Missing :warning:
pkg/controller/node/node.go	50.00%	1 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #707 +/- ## ========================================== + Coverage 19.80% 21.38% +1.58% ========================================== Files 123 119 -4 Lines 16863 15542 -1321 ========================================== - Hits 3340 3324 -16 + Misses 13145 11842 -1303 + Partials 378 376 -2 ``` | [Flag](https://app.codecov.io/gh/AliyunContainerService/terway/pull/707/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=AliyunContainerService) | Coverage Δ | | |---|---|---| | [unittests](https://app.codecov.io/gh/AliyunContainerService/terway/pull/707/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=AliyunContainerService) | `21.38% <28.48%> (+1.58%)` | :arrow_up: | Flags with carried forward coverage won't be shown. [Click here](https://docs.codecov.io/docs/carryforward-flags?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=AliyunContainerService#carryforward-flags-in-the-pull-request-comment) to find out more.

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