feat: limit-count plugin supports username and ssl for redis policy

[simon-flury]

Description

I want to use username and SSL to connect the plugin limit-count to a Redis instance with policy 'Redis'.

• For Username, it looks like possible to indicate it at line 56 of file apisix/plugins/limit-count/limit-count-redis.lua.
• For SSL, it looks like possible to add optional parameters when it connects to Redis at line 47 of file apisix/plugins/limit-count/limit-count-redis.lua.

Fixes #9175

Checklist

• I have explained the need for this PR and the problem it solves
• I have explained the changes or the new features added to this PR
• I have added tests corresponding to this change
• I have updated the documentation to reflect this change
• I have verified that this change is backward compatible (If not, please discuss on the APISIX mailing list first)

[monkeyDluffy6017]

Hi @simon-flury, Test cases are needed

[simon-flury]

Hi @monkeyDluffy6017, i add tests, thks

[monkeyDluffy6017]

@soulbird @leslie-tsang @kingluo please help to review this PR

[leslie-tsang]

Suggested change

	local ok, err = red:connect(conf.redis_host, conf.redis_port or 6379, sock_opts)
	local ok, err = red:connect(conf.redis_host, conf.redis_port, sock_opts)

It seems that we don't need a default value because it is already defined in the schema.

[simon-flury]

Hi @Qizeng-api7, i add my email address on my GitHub page. Thank you, Simon Flury ***@***.*** Envoyé avec la messagerie sécurisée Proton Mail.

…

------- Original Message ------- Le mercredi 26 avril 2023 à 10:01, Qizeng-api7 ***@***.***> a écrit :

Hello, @simon-flury! I am the operator of the APISIX Community. Thank you for your contribution to Apache APISIX! To express our gratitude and encouragement for your contribution, the Apache APISIX community would like to present to you the APISIX Contributor Certificate! However, we couldn't find your email address on your GitHub page, would you mind letting us know? We will send you a digital certificate by email later as a token of our appreciation. — Reply to this email directly, view it on GitHub, or unsubscribe. You are receiving this because you were mentioned.[https://mail.proton.me/api/core/v4/images?Url=https%3A%2F%2Fgithub.com%2Fnotifications%2Fbeacon%2FAEKJPKKGH76M75FHUNAYQX3XDDI5PA5CNFSM6AAAAAAWKZDA7SWGG33NNVSW45C7OR4XAZNMJFZXG5LFINXW23LFNZ2KUY3PNVWWK3TUL5UWJTS2Y2CXW.gif&DryRun=0&UID=p4z4t3ldgjww2pma6xgtunmusnimrged]