support to update memory swap by cri

[wangforthinker]

Signed-off-by: allen.wang allen.wq@alipay.com

Ⅰ. Describe what this PR did

Support to update memory swap by cri.

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？)

add unit test.

Ⅳ. Describe how to verify it

Ⅴ. Special notes for reviews

[codecov]

Codecov Report

Merging #2781 into master will increase coverage by 0.7%.
The diff coverage is 66.66%.

@@            Coverage Diff            @@
##           master    #2781     +/-   ##
=========================================
+ Coverage   68.64%   69.34%   +0.7%     
=========================================
  Files         277      277             
  Lines       17425    17431      +6     
=========================================
+ Hits        11961    12088    +127     
+ Misses       4108     4012     -96     
+ Partials     1356     1331     -25

Flag	Coverage Δ
#criv1alpha2_test	39.35% <22.22%> (-0.03%)	⬇️
#integration_test_0	36.54% <0%> (+0.04%)	⬆️
#integration_test_1	35.75% <0%> (+0.01%)	⬆️
#integration_test_2	36.45% <0%> (-0.05%)	⬇️
#integration_test_3	35.56% <0%> (?)
#node_e2e_test	35.21% <11.11%> (-0.12%)	⬇️
#unittest	28.54% <55.55%> (ø)	⬆️

Impacted Files	Coverage Δ
cri/v1alpha2/cri.go	71.48% <33.33%> (-0.67%)	⬇️
cri/v1alpha2/cri_utils.go	88.12% <83.33%> (+0.31%)	⬆️
daemon/logger/jsonfile/utils.go	71.54% <0%> (-1.63%)	⬇️
daemon/mgr/spec_linux.go	78.77% <0%> (ø)	⬆️
daemon/mgr/image.go	59.45% <0%> (+0.54%)	⬆️
apis/server/router.go	91.35% <0%> (+0.61%)	⬆️
daemon/mgr/container_stats.go	71.83% <0%> (+1.14%)	⬆️
ctrd/client.go	69.39% <0%> (+1.63%)	⬆️
registry/auth.go	55.14% <0%> (+1.86%)	⬆️
... and 14 more

[zhuangqh]

TODO: create a test in https://github.com/alibaba/cri-tools

[zhuangqh]

LGTM