perf: add tls common conf hibernate after

[qzhuyan]

Fixes

PR Checklist

Please convert it to a draft if any of the following conditions are not met. Reviewers may skip over until all the items are checked:

• Added tests for the changes
• Changed lines covered in coverage report
• Change log has been added to changes/<version>/(feat|fix)-<PR-id>.en.md and .zh.md files
• For internal contributor: there is a jira ticket to track this change
• If there should be document changes, a PR to emqx-docs.git is sent, or a jira ticket is created to follow up
• Schema changes are backward compatible

[qzhuyan]

do you think we should intro a value disabled or undefined to turn it off or just use some semi xlarge value like 1000 hours?

currently having issues letting hocon and emqx_config cope with the value undefined.
And disabled need some extra convert work here and there that leads to extra overhead on maintaining the code since this opt is common opt for all TLS servers and clients.

[qzhuyan]

here follows emqx 4.x that has default 5s and personally I think it will be much easier to make it default to be disabled undefined

[zhongwencool]

Personally, I'd recommend using infinity instead of undefined for this.
Although their effect is the same.
But our other configurations are using infinity
such as

 {"idle_timeout",
            sc(
                hoconsc:union([infinity, duration()])
                ...

https://www.erlang.org/doc/man/erlang.html#type-timeout

hibernate_after() = timeout()
timeout() = infinity | integer() >= 0

By the way, what happens if we set it to 0, is 0 the same as infinity?
Maybe we should also mention this in the document.

[lafirest]

Maybe 多久后休眠 will be better? Sorry, I can't think of a better word

[coveralls]

Pull Request Test Coverage Report for Build 4175359685

• 0 of 0 changed or added relevant lines in 0 files are covered.
• 42 unchanged lines in 13 files lost coverage.
• Overall coverage decreased (-0.02%) to 80.838%

---

Files with Coverage Reduction	New Missed Lines	%
apps/emqx_dashboard/src/emqx_dashboard_monitor.erl	1	69.44%
apps/emqx_gateway/src/mqttsn/emqx_sn_channel.erl	1	73.04%
apps/emqx/src/emqx_cm.erl	1	90.83%
apps/emqx/src/emqx_flapping.erl	1	85.11%
apps/emqx/src/emqx_session.erl	1	87.6%
apps/emqx_management/src/emqx_mgmt_api_trace.erl	2	86.67%
apps/emqx/src/emqx_channel.erl	2	87.58%
apps/emqx_resource/src/emqx_resource_buffer_worker.erl	3	93.04%
apps/emqx/src/emqx_broker.erl	4	83.15%
apps/emqx_management/src/emqx_mgmt_cli.erl	5	27.43%

Totals
Change from base Build 4173661439:	-0.02%
Covered Lines:	23734
Relevant Lines:	29360

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💛 - Coveralls