fix nested CWL enum in array and single-value combined + CWL Workflow step output chaining with glob

[fmigneault]

Changes

• Remove attribute WpsProcessInterface.stage_output_id_nested and enforce the behavior of nesting output by ID
  under corresponding directories for all remote Process execution when resolving CWL Workflow steps. This
  ensures a more consistent file and directory resolution between steps of different nature (CWL, WPS, OGC based)
  using multiple combinations of glob patterns and expected media-types.

Fixes

• Fix CWL definitions combining nested enum types as ["null", <enum>, {type: array, items: <enum>] without an
  explicit name or SchemaDefRequirement causing failing schema_salad resolution under cwltool. A patch
  is applied for the moment to inject a temporary name to let the CWL engine succeed schema validation (relates
  to Schema salad error validating CWL enum definitions common-workflow-language/cwltool#1908.

References

• Enum isssue relates to:
  • Duplicate AllowedValues entries in ensemble_grid_point_wetdays process bird-house/finch#301
  • Removed duplicates in models AllowedValues Fixes #301 bird-house/finch#302

[fmigneault]

@perronld
Assuming bird-house/finch#302 is fixed (which I commented out duplicates in my local XML WPS definition to test), combined with this PR, your ensemble_grid_point_wetdays process should work 🤞

[codecov]

Codecov Report

Merging #566 (5f8962c) into master (f0abcd1) will increase coverage by 0.07%.
The diff coverage is 91.11%.

@@            Coverage Diff             @@
##           master     #566      +/-   ##
==========================================
+ Coverage   84.47%   84.55%   +0.07%     
==========================================
  Files          79       79              
  Lines       17732    17788      +56     
  Branches     2688     2708      +20     
==========================================
+ Hits        14979    15040      +61     
+ Misses       2024     2020       -4     
+ Partials      729      728       -1     

Files Changed	Coverage Δ
weaver/processes/wps1_process.py	75.20% <ø> (+2.25%)	⬆️
weaver/processes/wps_workflow.py	87.36% <83.33%> (-1.14%)	⬇️
weaver/processes/wps_package.py	84.15% <88.88%> (+0.09%)	⬆️
weaver/processes/convert.py	84.60% <93.02%> (+0.40%)	⬆️
weaver/processes/wps_process_base.py	85.20% <100.00%> (+0.68%)	⬆️
weaver/wps_restapi/swagger_definitions.py	99.82% <100.00%> (+<0.01%)	⬆️

... and 1 file with indirect coverage changes