fix: outdated x509 key pair for testing

[zhuangqh]

Ⅰ. Describe what this PR did

regenerate a x509 key pair for testing.

add a script to regenerate.

Ⅱ. Does this pull request fix one issue?

fixes #2650

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

without unit test error

--- FAIL: TestTLSDialer (0.01s)
    syslog_test.go:193: failed to dial: x509: cannot validate certificate for 127.0.0.1 because it doesn't contain any IP SANs

Ⅴ. Special notes for reviews

[codecov]

Codecov Report

Merging #2651 into master will increase coverage by 10.09%.
The diff coverage is n/a.

@@             Coverage Diff             @@
##           master    #2651       +/-   ##
===========================================
+ Coverage   59.42%   69.52%   +10.09%     
===========================================
  Files         277      280        +3     
  Lines       18720    18845      +125     
===========================================
+ Hits        11125    13102     +1977     
+ Misses       6017     4272     -1745     
+ Partials     1578     1471      -107

Flag	Coverage Δ
#criv1alpha1test	31.25% <ø> (-0.14%)	⬇️
#criv1alpha2test	35.58% <ø> (-0.12%)	⬇️
#integrationtest	41.64% <ø> (-0.04%)	⬇️
#nodee2etest	32.72% <ø> (-0.01%)	⬇️
#unittest	26.91% <ø> (?)

Impacted Files	Coverage Δ
ctrd/watch.go	81.69% <0%> (-2.82%)	⬇️
cri/v1alpha1/cri.go	59.43% <0%> (-0.67%)	⬇️
cri/v1alpha2/cri.go	67.57% <0%> (-0.25%)	⬇️
daemon/mgr/container.go	58.79% <0%> (-0.22%)	⬇️
credential/credential.go	0% <0%> (ø)
credential/file_store.go	0% <0%> (ø)
credential/helpers.go	44.44% <0%> (ø)
storage/quota/quota.go	45.04% <0%> (+1.8%)	⬆️
pkg/meta/boltdb.go	69.41% <0%> (+2.35%)	⬆️
daemon/mgr/image_utils.go	85.45% <0%> (+3.63%)	⬆️
... and 122 more

[fuweid]

LGTM