create time should in seconds instead of nano seconds

[yyb196]

Signed-off-by: frankyang yyb196@gmail.com

Ⅰ. Describe what this PR did

when doing container list create time of every container should in seconds, or users who use docker as client to list containers will get the wrong create time. according to https://docs.docker.com/engine/api/v1.24/

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？)

test cases has been modified

Ⅳ. Describe how to verify it

Ⅴ. Special notes for reviews

[codecov]

Codecov Report

Merging #2955 into master will decrease coverage by 0.04%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master    #2955      +/-   ##
==========================================
- Coverage   68.19%   68.14%   -0.05%     
==========================================
  Files         291      291              
  Lines       18351    18351              
==========================================
- Hits        12514    12506       -8     
- Misses       4382     4384       +2     
- Partials     1455     1461       +6

Flag	Coverage Δ
#criv1alpha2_test	34.78% <0%> (-0.03%)	⬇️
#integration_test_0	36.11% <0%> (ø)	⬆️
#integration_test_1	35.49% <0%> (+0.02%)	⬆️
#integration_test_2	36.09% <100%> (-0.07%)	⬇️
#integration_test_3	35.54% <80%> (-0.02%)	⬇️
#node_e2e_test	34.22% <0%> (+0.01%)	⬆️
#unittest	27.95% <80%> (ø)	⬆️

Impacted Files	Coverage Δ
daemon/mgr/container_types.go	71.32% <100%> (ø)	⬆️
apis/server/container_bridge.go	90.55% <100%> (ø)	⬆️
pkg/utils/timeutils.go	100% <100%> (ø)	⬆️
ctrd/watch.go	72.97% <0%> (-5.41%)	⬇️
pkg/system/system.go	68.57% <0%> (-2.86%)	⬇️
ctrd/container.go	53.18% <0%> (-0.75%)	⬇️
cri/v1alpha2/cri.go	64.34% <0%> (+0.25%)	⬆️

[zhuangqh]

LGTM