[DRAFT] Apache HTTPD integration tests.

[justsmth]

Prerequisite PRs

• Impl SSL_client_hello_get1_extensions_present and friends #2561
• Implement SSL_set_verify_result #2576

---

Description of changes:

Integration test for Apache HTTPD.

Call-outs:

• Tests relating to TLS renegotiation are excluded b/c AWS-LC disables TLS renegotiation by default
• We do not build "mod_md", so associated tests are disabled.

Testing:

• All httpd tests are run (except those called out above).

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license and the ISC license.

[codecov-commenter]

Codecov Report

❌ Patch coverage is 83.33333% with 28 lines in your changes missing coverage. Please review.
✅ Project coverage is 76.23%. Comparing base (d966806) to head (3a637b5).

Files with missing lines	Patch %	Lines
ssl/ssl_client_hello_test.cc	84.21%	11 Missing and 1 partial ⚠️
ssl/ssl_lib.cc	79.31%	12 Missing ⚠️
ssl/ssl_transfer_asn1.cc	62.50%	3 Missing ⚠️
ssl/handshake.cc	50.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2591      +/-   ##
==========================================
- Coverage   78.68%   76.23%   -2.46%     
==========================================
  Files         645      645              
  Lines      110738   110922     +184     
  Branches    15656    15665       +9     
==========================================
- Hits        87132    84557    -2575     
- Misses      22915    25626    +2711     
- Partials      691      739      +48     

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