refactor: keep attach/detch functions synchronous and move async behaviour to caller

[gauravkghildiyal]

Caller side concurrency is generally better.

https://google.github.io/styleguide/go/decisions#synchronous-functions

/assign @swetharepakula
/cc @sawsa307
/cc @songrx1997

[k8s-ci-robot]

@gauravkghildiyal: GitHub didn't allow me to request PR reviews from the following users: sawsa307, songrx1997.

Note that only kubernetes members and repo collaborators can review this PR, and authors cannot review their own PRs.

In response to this:

Caller side concurrency is generally better.

/assign @swetharepakula
/cc @sawsa307
/cc @songrx1997

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository.

[k8s-ci-robot]

Hi @gauravkghildiyal. Thanks for your PR.

I'm waiting for a kubernetes member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

Once the patch is verified, the new status will be reflected by the ok-to-test label.

I understand the commands that are listed here.

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository.

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: gauravkghildiyal
Once this PR has been reviewed and has the lgtm label, please ask for approval from swetharepakula. For more information see the Kubernetes Code Review Process.

The full list of commands accepted by this bot can be found here.

Needs approval from an approver in each of these files:

• OWNERS

Approvers can indicate their approval by writing /approve in a comment
Approvers can cancel approval by writing /approve cancel in a comment

[gauravkghildiyal]

I'll send this out in the future depending on what the code looks then