added cce verion and move sdk to go mod

[wangshiqi308]

Which component this PR applies to?

cluster-autoscaler

What type of PR is this?

/kind feature
/kind cleanup

What this PR does / why we need it:

1. We had to copy the SDK file before because the go module was not enabled(see cluster autoscaler can not build when enable go mod #3146), but in this PR we put our SDK in the go.mod file
2. Added CCE version CA to servicestage folder.

Which issue(s) this PR fixes:

N/A

Special notes for your reviewer:

Does this PR introduce a user-facing change?

NONE

Additional documentation e.g., KEPs (Kubernetes Enhancement Proposals), usage docs, etc.:

[k8s-ci-robot]

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[wangshiqi308]

/assign @RainbowMango

[RainbowMango]

I guess after putting SDK to go.mod, the original SDL should be removed(actually moved to vendor), why not?

[wangshiqi308]

it couldn't be compiled without running go mod vendor

[RainbowMango]

it couldn't be compiled without running go mod vendor

Why not vendor the SDK? Is there something wrong?

[wangshiqi308]

it could be built with flag -mod=mod, but it is not in the Makefile, I'm not sure if it could pass the Test, I will have a try.

[wangshiqi308]

It couldn't pass test https://github.com/kubernetes/autoscaler/runs/5342369544?check_suite_focus=true

[RainbowMango]

Hi @wangshiqi308 It is recommended to split this to two PRs. First one is dedicated to the vendor thing and the other one for the rest. (Too many changed files and hard to review).