Fixes#30989
# Checklist for submitter
- [x] Added/updated automated tests
- [x] Where appropriate, automated tests simulate multiple hosts and
test for host isolation (updates to one hosts's records do not affect
another.)
<!-- This is an auto-generated comment: release notes by coderabbit.ai
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## Summary by CodeRabbit
* **New Features**
* Added rate limiting to SCEP certificate enrollment, returning a "Too
Many Requests" (HTTP 429) response if hosts request certificates too
frequently.
* **Bug Fixes**
* Improved error handling for rate-limited SCEP requests, providing
clear feedback when rate limits are exceeded.
* **Tests**
* Introduced integration tests to verify SCEP rate limiting behavior.
* **Chores**
* Enhanced internal configuration handling for SCEP certificate
management.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
Victor Lyuboslavsky
909a48b0ea