Upgrade Go version to 1.16

[tisonkun]

Development Task

So far, TiDB Operator development uses Go 1.13 which is end of life for a while. Also for supporting running on Apple M1 silicon, it is required to upgrade to 1.16.

@CadmusJiang and @zhouqiang-cl are in charge for upgrading Go version to 1.16 and most of validation works are done manually. Hopefully we get it done in this month.

This also supports TiDB stacks to upgrade Go version to 1.16 pingcap/tidb#22198

[tisonkun]

@CadmusJiang @purelind any updates?

[purelind]

@tisonkun @csuzhangxc Part of github action workflow already update，rest of ci will take some time to test before upgrade go version in ci

[tisonkun]

@purelind is there a schedule, e.g., before July 1st, that we plan to upgrade all pipeline and can do go.mod changes?

[tisonkun]

@purelind any updates?

[csuzhangxc]

we are pausing this now.

[feitian124]

we are pausing this now.

may i ask why? BTW, hello from csu

[csuzhangxc]

we are pausing this now.

may i ask why? BTW, hello from csu

just because we don't have time to do this work at the moment, and any contributions are welcome.

[tisonkun]

@csuzhangxc can you elaborate a bit on "any contributions"? It's hard to guess which contributions you looking for for update go version to 1.16. Update the config? Modify CI pipelines? Or other blockers.

[csuzhangxc]

@csuzhangxc can you elaborate a bit on "any contributions"? It's hard to guess which contributions you looking for for update go version to 1.16. Update the config? Modify CI pipelines? Or other blockers.

we need to upgrade CI both for UT and E2E, and may have some problems for E2E (not tested yet)

[DanielZhangQD]

Trace the go version upgrade in #4474.