Fix controller panic in cilium ipam is multi-pool

[cyclinder]

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Notice:

• unite test or E2E test
• do not forget essential code comment and log
• document for the PR
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  "release/none"
  "release/bug"
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What issue(s) does this PR fix:

Fixes #4428

Special notes for your reviewer:

1. 修复单 ipv4 时检查 cilium multi pool 的 ipv6 cidr
2. 修改默认cilium 启动模式为 native, 便于 e2e 中更好测试 cilium ipam 的不同 mode
3. 增加 e2e 测试

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 79.21%. Comparing base (7fd26d8) to head (22df46d).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #4433      +/-   ##
==========================================
- Coverage   79.26%   79.21%   -0.05%     
==========================================
  Files          54       54              
  Lines        6283     6283              
==========================================
- Hits         4980     4977       -3     
- Misses       1108     1110       +2     
- Partials      195      196       +1     

Flag	Coverage Δ
unittests	79.21% <ø> (-0.05%)	⬇️

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see 1 file with indirect coverage changes