PYTHON-5814 Configurable DNS domain validation for SRV records

[sleepyStick]

PYTHON-5814

Changes in this PR

• add srvAllowedHostsSuffix param

Test Plan

Checklist

Checklist for Author

• Did you update the changelog (if necessary)?
• Is there test coverage?
• Is any followup work tracked in a JIRA ticket? If so, add link(s).

Checklist for Reviewer

• Does the title of the PR reference a JIRA Ticket?
• Do you fully understand the implementation? (Would you be comfortable explaining how this code works to someone else?)
• Is all relevant documentation (README or docstring) updated?

[codecov-commenter]

Codecov Report

❌ Patch coverage is 77.08333% with 11 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
pymongo/synchronous/srv_resolver.py	50.00%	4 Missing and 1 partial ⚠️
pymongo/asynchronous/mongo_client.py	75.00%	0 Missing and 2 partials ⚠️
pymongo/asynchronous/srv_resolver.py	80.00%	2 Missing ⚠️
pymongo/synchronous/mongo_client.py	75.00%	0 Missing and 2 partials ⚠️

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