WeaverClient/CLI with auth handler and other CLI adjustments

[fmigneault]

Changes:

• Add CLI Authentication Handler parameters and corresponding auth argument of instantiated classes for
  WeaverClient methods that allows inline request authentication and authorization resolution to access a
  protected service. Any Authentication Handler implementation can be used to fulfill required server functionalities.
• Replaced CLI option -t by -T (Docker token) during deploy operation to match naming convention of
  other options (resolves Support authentication using CLI and WeaverClient #400).
• Replaced CLI option -H by nH (--no-headers) and wH (--with-headers) to respectively
  enable or (explicitly) disable return of headers from response of the executed operation.
• Replaced CLI option -L by nL (--no-links) and wL (--with-links) to respectively
  enable (explicitly) or disable return of links from response of the executed operation.
• Replaced previously defined -H option by new -H/--header argument allowing insertion of explicitly provided
  request headers for relevant requests called by the executed operation.

Fixes:

• Fix CLI operations assuming valid JSON response to instead return error response content and status code.
• Fix CLI rendering of various optional arguments and groups when displaying help messages.

References

Resolves DAC-460

[codecov]

Codecov Report

Merging #442 (fdbbc8a) into master (44c72d8) will increase coverage by 0.31%.
The diff coverage is 80.89%.

@@            Coverage Diff             @@
##           master     #442      +/-   ##
==========================================
+ Coverage   81.17%   81.48%   +0.31%     
==========================================
  Files          76       76              
  Lines       14281    14542     +261     
  Branches     3109     3158      +49     
==========================================
+ Hits        11592    11850     +258     
+ Misses       1982     1974       -8     
- Partials      707      718      +11     

Impacted Files	Coverage Δ
weaver/store/base.py	100.00% <ø> (ø)
weaver/store/mongodb.py	73.67% <ø> (ø)
weaver/typedefs.py	0.00% <ø> (ø)
weaver/utils.py	80.70% <42.30%> (-0.69%)	⬇️
weaver/cli.py	84.80% <82.73%> (+4.32%)	⬆️
weaver/base.py	100.00% <100.00%> (+26.66%)	⬆️
weaver/formats.py	87.45% <100.00%> (ø)
weaver/wps_restapi/swagger_definitions.py	99.87% <100.00%> (+<0.01%)	⬆️
weaver/wps/utils.py	79.22% <0.00%> (-0.87%)	⬇️
... and 2 more

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[francisPLT]

Went through most of it and up until now, everything looks pretty good. Also started testing the CLI directly. So far I like the changes and the inclusion of the Magpie Auth provider. Will continue tomorrow, especially the CLI, relevant documentation and live tests.