[maintenance] missing sync openapi, upgrades pip

[pcrespov]

What do these changes do?

• fixes missing sync with openapi specs
• upgrades pip from 19 to 20
• Adds update alpine package management (apk) and systematically installs basic libraries

Checklist

• Did you change any service's API? Then make sure to bundle document and upgrade version (make openapi-specs, git commit ... and then make version-*)
• Unit tests for the changes exist
• Runs in the swarm
• Documentation reflects the changes
• New module? Add your github username to .github/CODEOWNERS

[codecov]

Codecov Report

Merging #1354 into master will increase coverage by 0.01%.
The diff coverage is n/a.

@@            Coverage Diff            @@
##           master   #1354      +/-   ##
=========================================
+ Coverage   72.69%   72.7%   +0.01%     
=========================================
  Files         201     201              
  Lines        8356    8356              
  Branches      937     937              
=========================================
+ Hits         6074    6075       +1     
+ Misses       2011    2010       -1     
  Partials      271     271

Flag	Coverage Δ
#integrationtests	57.55% <ø> (ø)	⬆️
#unittests	67.12% <ø> (+0.01%)	⬆️

Impacted Files	Coverage Δ
.../director/src/simcore_service_director/producer.py	67.01% <0%> (+0.25%)	⬆️

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