chore: pin sys module in go.mod to resolve a fatal runtime execution in go 1.17

[huikang]

Signed-off-by: Hui Kang [email protected]

close #1693

Checklist:

• Either (a) I've created an enhancement proposal and discussed it with the community, (b) this is a bug fix, or (c) this is a chore.
• The title of the PR is (a) conventional, (b) states what changed, and (c) suffixes the related issues number. E.g. "fix(controller): Updates such and such. Fixes #1234".
• I've signed my commits with DCO
• I have written unit and/or e2e tests for my change. PRs without these are unlikely to be merged.
• My builds are green. Try syncing with master if they are not.
• My organization is added to USERS.md.

[codecov]

Codecov Report

Merging #1692 (004daf4) into master (4d3b992) will decrease coverage by 0.00%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #1692      +/-   ##
==========================================
- Coverage   82.07%   82.06%   -0.01%     
==========================================
  Files         116      116              
  Lines       16064    16073       +9     
==========================================
+ Hits        13184    13190       +6     
- Misses       2208     2210       +2     
- Partials      672      673       +1     

Impacted Files	Coverage Δ
rollout/trafficrouting/istio/controller.go	50.81% <0.00%> (-1.63%)	⬇️
rollout/temlateref.go	82.98% <0.00%> (+0.82%)	⬆️

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[jessesuen]

Some reason codegen verify is failed. Do you know why?

[alexmt]

Thank you for unblocking me! LGTM

[alexmt]

Just noticed CI failed. @huikang , Can you please run go mod download && go mod tidy to make codegen happy?

[sonarqubecloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

No Coverage information
No Duplication information

[huikang]

@jessesuen , @alexmt 's suggestion makes the codegen test passed. Thanks.