Only abort when RSA PWCT fail in FIPS

[samuel40791765]

Description of changes:

We've been getting abort failures when building with FIPS mode against Ruby's break tests. The issue happens to be related to the abort call we do when calls to RSA_generate_key_ex fail.
In the original commit where this was introduced (6bdd4c3), it's mentioned that "It's required that the FIPS module aborts when PCT tests fail in RSA_check_fips()." Our current behavior fails regardless of a regular RSA failure or a PWCT failure, which causes regular RSA failures to unintentionally abort as well.
This changes aborting to only happen during failures in RSA_check_fips. Our existing death tests were also expecting failures during regular RSA failures rather than PWCT failures, so I've tweaked the tests to account for that. Ruby's RSA break test passes successfully with this change.

Call-outs:

The new test is ran when the CFLAG BORINGSSL_FIPS_BREAK_TESTS is set, so I've updated our test script to run tests when building with this dimension. This leverages our existing break tests to test PWCT aborting behavior.

Testing:

New test dimension

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

Attention: Patch coverage is 60.00000% with 2 lines in your changes missing coverage. Please review.

Project coverage is 78.69%. Comparing base (5982853) to head (734133d).

Files with missing lines	Patch %	Lines
crypto/fipsmodule/rsa/rsa_impl.c	60.00%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2020      +/-   ##
==========================================
- Coverage   78.69%   78.69%   -0.01%     
==========================================
  Files         598      598              
  Lines      103326   103329       +3     
  Branches    14687    14688       +1     
==========================================
  Hits        81310    81310              
- Misses      21366    21368       +2     
- Partials      650      651       +1     

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[samuel40791765]

+ export BORINGSSL_FIPS_BREAK_TEST=RSA_PWCT
+ BORINGSSL_FIPS_BREAK_TEST=RSA_PWCT
+ /codebuild/output/src2176229394/src/github.com/aws/aws-lc/test_build_dir/crypto/crypto_test --gtest_filter=RSADeathTest.KeygenFailAndDie
Note: Google Test filter = RSADeathTest.KeygenFailAndDie
[==========] Running 1 test from 1 test suite.
[----------] Global test environment set-up.
[----------] 1 test from RSADeathTest
[ RUN      ] RSADeathTest.KeygenFailAndDie
[       OK ] RSADeathTest.KeygenFailAndDie (2080 ms)
[----------] 1 test from RSADeathTest (2080 ms total)

[----------] Global test environment tear-down
[==========] 1 test from 1 test suite ran. (2080 ms total)
[  PASSED  ] 1 test.
+ unset BORINGSSL_FIPS_BREAK_TEST