fix default data handling of optional file inputs for WPS-1 execution

[fmigneault]

Fixes

• relates to Optional omitted Complex Input with default format is generated errorneously (?)  geopython/pywps#633
• fixes update test weaver 4.0 + run on live instance Ouranosinc/pavics-sdi#230
• fixes use post-compose script to register weaver birds bird-house/birdhouse-deploy#192
  which in turn fixes Feature/dac 300 weaver compose bird-house/birdhouse-deploy#114

Full Weaver integration with https://github.com/bird-house/hummingbird in PAVICS/DACCS stack.

[codecov]

Codecov Report

Merging #344 (8ae15c0) into master (f35e0eb) will decrease coverage by 0.02%.
The diff coverage is 71.42%.

@@            Coverage Diff             @@
##           master     #344      +/-   ##
==========================================
- Coverage   77.79%   77.77%   -0.03%     
==========================================
  Files          63       63              
  Lines        9981     9989       +8     
  Branches     1508     1511       +3     
==========================================
+ Hits         7765     7769       +4     
- Misses       1732     1734       +2     
- Partials      484      486       +2     

Impacted Files	Coverage Δ
weaver/processes/convert.py	77.05% <ø> (-0.06%)	⬇️
weaver/typedefs.py	0.00% <ø> (ø)
weaver/processes/wps_package.py	71.24% <66.66%> (-0.26%)	⬇️
weaver/processes/wps1_process.py	74.78% <100.00%> (+0.43%)	⬆️

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[dbyrns]

LGTM