HKDF, HKDF_expand, and PBKDF Truncated SHA2-512

[skmcgrail]

Description of changes:

• ACVP testing for SHA2-512/224 and SHA2-512/256 for PBKDF and KDA: HKDF.
• Update service indicator for PBKDF, HKDF, and HKDF_expand (KBKDF feedback mode) to support SHA2-512/224 and SHA2-512/256 as approved algorithms.

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

All modified and coverable lines are covered by tests ✅

Project coverage is 78.67%. Comparing base (460a9dd) to head (fad6c44).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1946      +/-   ##
==========================================
- Coverage   78.67%   78.67%   -0.01%     
==========================================
  Files         585      585              
  Lines      100849   100849              
  Branches    14299    14297       -2     
==========================================
- Hits        79347    79344       -3     
- Misses      20868    20871       +3     
  Partials      634      634              

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[nebeid]

• What is the source of the added test vectors in service_inidicator_test.cc, would be good to add the source to the comments if it's a standard or to the PR description.
• The sets (mentioned in L3374-L3378) of PBKDF test cases can be commented on because it's not clear which ones have short password/salt. The titles set 1, 2 or 3 can be put before each set in the PBKDF2TestVector struct.
• Most of the zip files got smaller especially KDA-HKDF.bz2, do we have the same coverage we'd like?

[skmcgrail]

• What is the source of the added test vectors in service_inidicator_test.cc, would be good to add the source to the comments if it's a standard or to the PR description.

There is a comment above each section. The HKDF ones from the RFC and the PBKDF ones come from a repository that contains python script for generating the vectors using OpenSSL via Python's cryptography pypi package.

* The sets (mentioned in L3374-L3378) of PBKDF test cases can be commented on because it's not clear which ones have short password/salt. The titles set 1, 2 or 3 can be put before each set in the `PBKDF2TestVector` struct.

There is a comment higher up describing the test cases, and that they are sourced from an external repository.

* Most of the zip files got smaller especially KDA-HKDF.bz2, do we have the same coverage we'd like?

Yes, either I forgot to trim the files last time, or they compress better this time. But they have what is needed to test the ACVP tool and module wrapper.