refactor(LSC): replace deprecated functions under pkg io/ioutil

[xinqshang]

Pre-Checklist

Note: please complete ALL items in the following checklist.

• I have read through the CONTRIBUTING.md documentation.
• My code has the necessary comments and documentation (if needed).
• I have added relevant tests

Description

golangci-lint report some err when exec make all
to fix it
replace deprecated functions under pkg io/ioutil

Related Issues

N/A

New Behavior (screenshots if needed)

N/A

[daniel-hutao]

I'm so sorry that this branch has conflicts for my previous merged refactor pr. Please resolve the conflicts and then, we'll take a review right away.

[aFlyBird0]

Hi @xinqshang , thanks for your contribution! Please join CNCF's Slack, and join our channel in CNCF Slack!

Here are a few useful things for you to continue your open-source journey:

• If you are searching for something else to work on, please see "find an issue".
• Check out our new contributor guide and the "Developer Guide".
• Read our blog; they are on Medium, too.

We will review your pr tomorrow morning.🙌

[iyear]

@xinqshang If you find it difficult to resolve a large number of conflicts and the code submitted is not too difficult to modify, you can close the PR first, sync fork and then submit a new PR again.

[xinqshang]

I'm so sorry that this branch has conflicts for my previous merged refactor pr. Please resolve the conflicts and then, we'll take a review right away.

done

[xinqshang]

Hi @xinqshang , thanks for your contribution! Please join CNCF's Slack, and join our channel in CNCF Slack!

Here are a few useful things for you to continue your open-source journey:

• If you are searching for something else to work on, please see "find an issue".
• Check out our new contributor guide and the "Developer Guide".
• Read our blog; they are on Medium, too.

We will review your pr tomorrow morning.🙌

got it

[iyear]

Careful Gopher🐭!