Allow connection to servers with no token and no password

[IanMatthewHuff]

For #7137

• Pull request represents a single change (i.e. not fixing disparate/unrelated things in a single PR)
• Title summarizes what is changing
• Has a news entry file (remember to thank yourself!)
• Appropriate comments and documentation strings in the code
• Has sufficient logging.
• Has telemetry for enhancements.
• Unit tests & system/integration tests are added/updated
• Test plan is updated as appropriate
• package-lock.json has been regenerated by running npm install (if dependencies have changed)
• The wiki is updated with any design decisions/details.

[rchiodo]

[codecov-io]

Codecov Report

Merging #7708 into master will decrease coverage by <.01%.
The diff coverage is 80%.

@@            Coverage Diff            @@
##           master   #7708      +/-   ##
=========================================
- Coverage    58.7%   58.7%   -0.01%     
=========================================
  Files         493     493              
  Lines       22011   22012       +1     
  Branches     3539    3539              
=========================================
  Hits        12922   12922              
- Misses       8280    8281       +1     
  Partials      809     809

Impacted Files	Coverage Δ
src/client/datascience/types.ts	100% <ø> (ø)	⬆️
...ient/datascience/jupyter/jupyterPasswordConnect.ts	80.32% <80%> (-1.34%)	⬇️

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