Implement ragdoll

[torben-hansen]

Description of changes:

This PR moves the ragdoll implementation from the feature branch to main branch.

Most (but not all) additions are from the new import method for Jitter Entropy. After this PR, we will import from v3.6.3 tag.

There are a few additions compared to the feature branch:

• build_and_test_ssl_runner_valgrind currently overrides the defined GO timeout value. It shouldn't. So, this PR also removes that to allow the SSL Valgrind runner to finish with the slower Jitter Entropy.
• Concurrently execute ssl runner tests under Valgrind to improve CI speed
• Initialize an un-initialized variable in urandom.c.

Testing:

Existing CI

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.

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[codecov-commenter]

Codecov Report

❌ Patch coverage is 77.25061% with 374 lines in your changes missing coverage. Please review.
✅ Project coverage is 78.70%. Comparing base (04875db) to head (902eb1b).
⚠️ Report is 10 commits behind head on main.

Files with missing lines	Patch %	Lines
crypto/rand_extra/urandom.c	35.41%	93 Missing ⚠️
crypto/fipsmodule/rand/rand_test.cc	63.15%	48 Missing and 8 partials ⚠️
crypto/fipsmodule/rand/rand_isolated_test.cc	80.37%	45 Missing and 7 partials ⚠️
...fipsmodule/rand/entropy/tree_drbg_jitter_entropy.c	83.60%	30 Missing ⚠️
...opy/jitterentropy-library/src/jitterentropy-base.c	30.95%	27 Missing and 2 partials ⚠️
crypto/test/test_util.cc	44.00%	18 Missing and 10 partials ⚠️
crypto/ube/fork_detect.c	83.13%	14 Missing ⚠️
.../entropy/tree_drbg_jitter_entropy_isolated_test.cc	91.17%	10 Missing and 2 partials ⚠️
crypto/fipsmodule/rand/rand.c	93.20%	11 Missing ⚠️
crypto/rand_extra/urandom_test.cc	81.35%	5 Missing and 6 partials ⚠️
... and 9 more

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2615      +/-   ##
==========================================
- Coverage   78.72%   78.70%   -0.03%     
==========================================
  Files         645      662      +17     
  Lines      111086   113073    +1987     
  Branches    15690    15928     +238     
==========================================
+ Hits        87453    88991    +1538     
- Misses      22941    23307     +366     
- Partials      692      775      +83     

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[github-actions]

clang-tidy made some suggestions

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[github-actions]

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[github-actions]

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[github-actions]

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