chore: remove refs to deprecated io/ioutil

[testwill]

Checklist

• Added tests for features and functional changes
• Public functions and types are documented
• Standard formatting is applied to Go code
• Is this a new API? Added a new file that begins with //go:build ceph_preview
• Ran make api-update to record new APIs

New or infrequent contributors may want to review the go-ceph Developer's Guide including the section on how we track API Status and the API Stability Plan.

The go-ceph project uses mergify. View the mergify command guide for information on how to interact with mergify. Add a comment with @Mergifyio rebase to rebase your PR when github indicates that the PR is out of date with the base branch.

[anoopcs9]

lgtm, thanks.

[phlogistonjohn]

Hi there, thanks for the contribution. Code generally looks good - but here's an optional request: Please break up the change into multiple changes one for each directory and have your "topic" (currently "chore") be named after the subpackage you are changing. For example changes to the ./cephfs/ directory would be named like cephfs: remove refs to deprecated io/ioutil. This helps your changes fit in better with the other changes in the project history.

If you are not comfortable making this change or just prefer not to do it please say so and I can approve. Like I said, it's not required but it would be nice. Thanks!

[testwill]

ok, wait

Pull request has been modified.

[anoopcs9]

@Mergifyio rebase

[mergify]

rebase

✅ Branch has been successfully rebased

[phlogistonjohn]

LGTM. Thanks very much for your contribution, I really appreciate it!

[phlogistonjohn]

Heh, pre-pacific test run was failing (but it was for yum/dnf reasons) but I forgot pre-pacific is not required for mergify. :-)