[fix][broker] change name limitTime to limitTimeInSec

[StevenLuMT]

Motivation

limitTime It's a confusing name, without the time unit, it is easy to cause bugs,
so we should deprecate the old name limitTime and introduce a new one limitTimeInSec

Modifications

change name limitTime to limitTimeInSec

Verifying this change

• Make sure that the change passes the CI checks.
  This change is a trivial rework / code cleanup without any test coverage.

Does this pull request potentially affect one of the following parts:

If the box was checked, please highlight the changes

• Dependencies (add or upgrade a dependency)
• The public API
• The schema
• The default values of configurations
• The threading model
• The binary protocol
• The REST endpoints
• The admin CLI options
• The metrics
• Anything that affects deployment

Documentation

Check the box below or label this PR directly.

Need to update docs?

• doc
• doc-required
• doc-not-needed
• doc-complete

Matching PR in forked repository

PR in forked repository:

[github-actions]

The pr had no activity for 30 days, mark with Stale label.