fix: dynamic reload cni default config

[zhuangqh]

Signed-off-by: zhuangqh [email protected]

Ⅰ. Describe what this PR did

related to alibaba-archive/ocicni#2

Ⅱ. Does this pull request fix one issue?

Ⅲ. Why don't you add test cases (unit test/integration test)? (你真的觉得不需要加测试吗？)

Ⅳ. Describe how to verify it

Ⅴ. Special notes for reviews

[codecov]

Codecov Report

Merging #2949 into master will decrease coverage by 2.1%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #2949      +/-   ##
==========================================
- Coverage    68.1%   65.99%   -2.11%     
==========================================
  Files         291      291              
  Lines       18347    18347              
==========================================
- Hits        12495    12109     -386     
- Misses       4386     4819     +433     
+ Partials     1466     1419      -47

Flag	Coverage Δ
#criv1alpha2_test	34.8% <ø> (+0.01%)	⬆️
#integration_test_0	36.13% <ø> (-0.01%)	⬇️
#integration_test_1	?
#integration_test_2	36.07% <ø> (-0.03%)	⬇️
#integration_test_3	35.61% <ø> (+0.04%)	⬆️
#node_e2e_test	34.15% <ø> (ø)	⬆️
#unittest	27.95% <ø> (ø)	⬆️

Impacted Files	Coverage Δ
ctrd/image_commit.go	0% <0%> (-69.29%)	⬇️
daemon/mgr/container_commit.go	0% <0%> (-56.1%)	⬇️
daemon/mgr/container_copy.go	38.32% <0%> (-19.17%)	⬇️
apis/server/copy_bridge.go	46.93% <0%> (-16.33%)	⬇️
daemon/mgr/container_exec.go	65.04% <0%> (-14.64%)	⬇️
pkg/reference/def.go	77.77% <0%> (-11.12%)	⬇️
daemon/mgr/network_utils.go	30.43% <0%> (-10.87%)	⬇️
daemon/mgr/events.go	87.5% <0%> (-9.73%)	⬇️
pkg/streams/utils.go	79.76% <0%> (-9.53%)	⬇️
apis/server/network_bridge.go	57.25% <0%> (-8.88%)	⬇️
... and 17 more

[rudyfly]

LGTM