fix: not copy parent dir when path contains dot

[ZYecho]

Signed-off-by: zhangyue zy675793960@yeah.net

Ⅰ. Describe what this PR did

when path contains dot, such as test/. , we should not copy the test dir into dst, we just need to copy the file& dir under test/ into dst.

Ⅱ. Does this pull request fix one issue?

None.

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

added.

Ⅳ. Describe how to verify it

wait for CI.

Ⅴ. Special notes for reviews

None.

[codecov]

Codecov Report

Merging #2920 into master will decrease coverage by 0.12%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master    #2920      +/-   ##
==========================================
- Coverage   68.23%   68.11%   -0.13%     
==========================================
  Files         291      291              
  Lines       18328    18329       +1     
==========================================
- Hits        12506    12484      -22     
- Misses       4368     4379      +11     
- Partials     1454     1466      +12

Flag	Coverage Δ
#criv1alpha2_test	34.74% <0%> (-0.09%)	⬇️
#integration_test_0	36.08% <0%> (+0.01%)	⬆️
#integration_test_1	35.5% <100%> (-0.01%)	⬇️
#integration_test_2	35.93% <0%> (-0.11%)	⬇️
#integration_test_3	35.64% <100%> (ø)	⬆️
#node_e2e_test	34.21% <0%> (-0.15%)	⬇️
#unittest	27.98% <0%> (-0.01%)	⬇️

Impacted Files	Coverage Δ
daemon/mgr/container_copy.go	57.73% <100%> (+0.25%)	⬆️
cri/ocicni/netns.go	58.1% <0%> (-2.71%)	⬇️
ctrd/container.go	51.62% <0%> (-2.68%)	⬇️
daemon/mgr/container.go	59.1% <0%> (-1.25%)	⬇️
cri/v1alpha2/cri.go	63.78% <0%> (-0.26%)	⬇️
daemon/mgr/container_utils.go	76.76% <0%> (+0.5%)	⬆️
apis/server/utils.go	75% <0%> (+3.84%)	⬆️
ctrd/watch.go	78.37% <0%> (+5.4%)	⬆️

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