Correctly create optional versioned base URLs

[CasperWA]

Fixes #177

Concerning testing this, it is quite difficult for the way our test-setup works at the moment.
We could add an extra test for the docker CI tests, but it is perhaps not the correct place?

[codecov]

Codecov Report

Merging #178 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #178   +/-   ##
=======================================
  Coverage   86.31%   86.31%           
=======================================
  Files          40       40           
  Lines        1878     1878           
=======================================
  Hits         1621     1621           
  Misses        257      257

Flag	Coverage Δ
#unittests	86.31% <ø> (ø)	⬆️

Impacted Files	Coverage Δ
optimade/server/routers/utils.py	95.74% <ø> (ø)	⬆️

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[ml-evs]

I think we should make this fix right now, if you wanted to ping the docker to make sure the current versions are up (e.g. docker exec optimade-python-tools_optimade_1 optimade_validator http://localhost:5000/optimade/v0.10.0 and so on) that won't do any harm.

The next thing to add to the validator is support for validating optional features, where one could be taking the API version from info/ and checking if the minor/patch versions are also valid URLs.

[CasperWA]

I think we should make this fix right now, if you wanted to ping the docker to make sure the current versions are up (e.g. docker exec optimade-python-tools_optimade_1 optimade_validator http://localhost:5000/optimade/v0.10.0 and so on) that won't do any harm.

Already putting together this commit.

The next thing to add to the validator is support for validating optional features, where one could be taking the API version from info/ and checking if the minor/patch versions are also valid URLs.

Nice idea!

[CasperWA]

Made it so that the CI yml file is updated according to the set-optimade-ver invoke task. Furthermore, a check is done on the supplied version to this task.

[ml-evs]

Looks perfect to me now, cheers @CasperWA.