Add codegen updates

[lpatino10]

This PR adds the newest generated code using the following commits:

• API Definition: a3d247f2d250edf5b9743a41afcfebda52f66cf4
• Codegen: 1b4341039c46d6794f65a12932698cb7aeb1c236

Most of the files changed are due to changes in comment formatting, so they can be skimmed.

The main code changes are:

• Addition of Language Translator v3, with tests
• Tests for RC instances in Language Translator and Visual Recognition

[codecov-io]

Codecov Report

Merging #950 into develop will decrease coverage by 26.26%.
The diff coverage is 52.65%.

@@              Coverage Diff               @@
##             develop     #950       +/-   ##
==============================================
- Coverage      65.31%   39.05%   -26.27%     
+ Complexity      2654     1470     -1184     
==============================================
  Files            564      580       +16     
  Lines          14243    14675      +432     
  Branches         809      840       +31     
==============================================
- Hits            9303     5731     -3572     
- Misses          4524     8610     +4086     
+ Partials         416      334       -82

Impacted Files	Coverage Δ	Complexity Δ
.../personality_insights/v3/model/ProfileOptions.java	100% <ø> (ø)	10 <0> (ø)	⬇️
...veloper_cloud/discovery/v1/model/QueryOptions.java	48.2% <ø> (-4.32%)	21 <0> (ø)
...oud/assistant/v1/model/UpdateWorkspaceOptions.java	87.35% <ø> (-5.75%)	10 <0> (-3)
..._cloud/assistant/v1/model/UpdateEntityOptions.java	75.92% <ø> (-24.08%)	6 <0> (-3)
..._cloud/speech_to_text/v1/model/RegisterStatus.java	100% <ø> (ø)	3 <0> (ø)	⬇️
...conversation/v1/model/UpdateDialogNodeOptions.java	35.08% <ø> (-15.79%)	4 <0> (-16)
.../conversation/v1/model/UpdateWorkspaceOptions.java	87.35% <ø> (-5.75%)	10 <0> (-3)
...ech_to_text/v1/model/SpeechRecognitionResults.java	20% <ø> (-60%)	1 <0> (-3)
...understanding/v1/NaturalLanguageUnderstanding.java	56% <ø> (-16%)	8 <0> (-4)
...scovery/v1/model/ListCollectionFieldsResponse.java	50% <ø> (ø)	1 <0> (ø)	⬇️
... and 422 more

---

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 d173cf6...fe99380. Read the comment docs.

[mediumTaj]

👍looks good!
The only thing we might want to do is add iam authentication in these two readme files

https://github.com/watson-developer-cloud/java-sdk/blob/generated-updates/language-translator/README.md
https://github.com/watson-developer-cloud/java-sdk/blob/generated-updates/visual-recognition/README.md

[lpatino10]

Good thinking. I'll add that now and merge.