[WIP] feat: enable data caching cross jobs

[zjchenn]

Signed-off-by: Zhijun Chen [email protected]

Ⅰ. Describe what this PR does

This PR decouples cacheBackend from jobs and makes cacheBackend can be reused in different jobs.

II. Does this pull request fix one issue?

#252

III. Special notes for reviewers if any.

In progress, update doc & unit testing later.

• [x] code
• [ ] unit testing
• [ ] document

[codecov-commenter]

Codecov Report

Merging #263 (7f7769e) into master (7c2c969) will increase coverage by 0.64%. The diff coverage is 34.40%.

@@            Coverage Diff             @@
##           master     #263      +/-   ##
==========================================
+ Coverage   29.43%   30.07%   +0.64%     
==========================================
  Files          89       89              
  Lines        6193     6260      +67     
==========================================
+ Hits         1823     1883      +60     
- Misses       4108     4115       +7     
  Partials      262      262              

Flag	Coverage Δ
unittests	30.07% <34.40%> (+0.64%)	:arrow_up:

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
pkg/job_controller/job.go	24.84% <0.00%> (-0.32%)	:arrow_down:
pkg/job_controller/job_controller.go	37.50% <35.48%> (+26.38%)	:arrow_up:
controllers/cache/cachebackend_controller.go	41.30% <40.38%> (+3.20%)	:arrow_up:

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[SimonCqk]

@zjchenn hi zjchenn, thanks for your contribution! you may design & implement unit testing in next stage of work.

[zjchenn]

/cc @SimonCqk

[SimonCqk]

/LGTM