Resource monitoring and statistics

[fmigneault]

Changes

• add runtime options to allow resource monitoring (as best as possible, relates to [Feature] Support ResourceRequirement with preemptive knowledge of available server resources #138)
• add additional resource monitoring using the celery process itself and psutil
• fix invalid job URL Location header duplicated in response, causing errors during CLI tests using it

[codecov]

Codecov Report

Merging #439 (a1f0bc0) into master (cc348ca) will increase coverage by 0.21%.
The diff coverage is 90.30%.

@@            Coverage Diff             @@
##           master     #439      +/-   ##
==========================================
+ Coverage   80.95%   81.17%   +0.21%     
==========================================
  Files          76       76              
  Lines       14074    14281     +207     
  Branches     3064     3109      +45     
==========================================
+ Hits        11394    11592     +198     
  Misses       1982     1982              
- Partials      698      707       +9     

Impacted Files	Coverage Δ
weaver/cli.py	80.48% <ø> (ø)
weaver/quotation/estimation.py	75.60% <ø> (ø)
weaver/store/base.py	100.00% <ø> (ø)
weaver/typedefs.py	0.00% <ø> (ø)
weaver/processes/convert.py	80.12% <50.00%> (-0.05%)	⬇️
weaver/store/mongodb.py	73.67% <50.00%> (+0.10%)	⬆️
weaver/wps_restapi/jobs/utils.py	76.34% <50.00%> (-0.08%)	⬇️
weaver/datatype.py	74.97% <66.66%> (-0.09%)	⬇️
weaver/processes/execution.py	84.30% <87.50%> (+0.38%)	⬆️
weaver/wps_restapi/jobs/jobs.py	86.18% <88.23%> (-0.04%)	⬇️
... and 9 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 5ade958...a1f0bc0. Read the comment docs.