PARQUET-1477: [C++] sync thrift to final crypto spec

[ggershinsky]

No description provided.

[codecov-io]

Codecov Report

Merging #4022 into master will increase coverage by <.01%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #4022      +/-   ##
==========================================
+ Coverage   87.83%   87.83%   +<.01%     
==========================================
  Files         734      734              
  Lines       90433    90433              
  Branches     1252     1252              
==========================================
+ Hits        79429    79432       +3     
+ Misses      10883    10880       -3     
  Partials      121      121

Impacted Files	Coverage Δ
cpp/src/arrow/io/readahead.cc	95.95% <0%> (-1.02%)	⬇️
cpp/src/arrow/util/thread-pool-test.cc	97.66% <0%> (-0.94%)	⬇️
cpp/src/plasma/thirdparty/ae/ae.c	71.69% <0%> (+0.94%)	⬆️
js/src/ipc/metadata/json.ts	96.73% <0%> (+4.34%)	⬆️

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 87e9ec3...0ce831e. Read the comment docs.

[wesm]

Can you create a JIRA issue for this?

[wesm]

+1