add QnA TestDevSpec

[xhr0804]

spec to bring bf qna test

[codecov-commenter]

Codecov Report

Merging #919 into master will increase coverage by 1.01%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master     #919      +/-   ##
==========================================
+ Coverage   55.83%   56.84%   +1.01%     
==========================================
  Files         220      219       -1     
  Lines       16181    16959     +778     
  Branches     2328     2345      +17     
==========================================
+ Hits         9034     9641     +607     
- Misses       6569     6725     +156     
- Partials      578      593      +15     

Impacted Files	Coverage Δ
packages/lg/src/commands/lg/index.ts	66.66% <0.00%> (-16.67%)	⬇️
packages/lu/src/utils/textfilereader.ts	28.57% <0.00%> (-15.43%)	⬇️
...kages/qnamaker/src/commands/qnamaker/kb/publish.ts	85.71% <0.00%> (-14.29%)	⬇️
...aker/src/commands/qnamaker/endpointkeys/refresh.ts	85.71% <0.00%> (-14.29%)	⬇️
...atics/confusion_matrix/AppBinaryConfusionMatrix.ts	85.71% <0.00%> (-14.29%)	⬇️
...ematics/mathematics_helper/AppMathematicsHelper.ts	86.36% <0.00%> (-13.64%)	⬇️
packages/qnamaker/src/utils/qnamakerbase.ts	71.64% <0.00%> (-8.72%)	⬇️
packages/lu/src/parser/lu/lu.js	91.66% <0.00%> (-8.34%)	⬇️
packages/qnamaker/src/commands/qnamaker/query.ts	41.93% <0.00%> (-8.07%)	⬇️
...ispatcher/src/data/AppEntityAnnotatedCorpusData.ts	92.00% <0.00%> (-8.00%)	⬇️
... and 81 more

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[xhr0804]

@vishwacsena @scheyal Could you please review the spec

[scheyal]

Spec for the backlog. We should have a QnAMaker test CLI.
Thank you.