LDAP: Allow TLS certificate checking policy to be configured

[daedric]

In case of a local LDAP server, certificates do not always match the address.
In this case, we cannot connect to the LDAP server.

This PR allows one to configure a policy for certificate checking.

PHP is not my forte, please do not hesitate if anything is not idiomatic nor good :)

[tchapi]

Hi @daedric and thanks for your contribution!

I'm not a LDAP expert, but it seems overall correct

• I would be very intentional in the naming => LDAPCertificateCheckingStrategy and LDAP_TLS_CERT_CHECK_STRATEGY probably for instance
• Also, you need to update the .env file (here) to add the default value, and some comment on what it does
• Same for the README 🙏🏼

Thank you again!

[daedric]

Hi @daedric and thanks for your contribution!

I'm not a LDAP expert, but it seems overall correct
Me neither :d

* I would be very intentional in the naming => `LDAPCertificateCheckingStrategy` and `LDAP_TLS_CERT_CHECK_STRATEGY` probably for instance

I don't mind, the reason for this naming that the usual config/env variable for that is ldap_tls_reqcert or tls_reqcert.

I really don't mind changing it, as I find it clearer too. Please let me know.

* Also, you need to update the `.env` file ([here](https://github.com/tchapi/davis/blob/main/.env)) to add the default value, and some comment on what it does

* Same for the README 🙏🏼

Will do!

Thank you again!

My pleasure!

[tchapi]

I really don't mind changing it, as I find it clearer too. Please let me know.

Yes, I'd change it personally 🙏🏼 Thanks

[daedric]

FYI I've done the requested changed :)

[tchapi]

FYI I've done the requested changed :)

Thanks a lot!