Move CI to Azure

[A-CGray]

Purpose

The current github action for running the OAS tests is a bit of a mess, it tries to build OpenMPI, PETSc and OpenVSP, and it uses "latest" and "old" package versions that don't match the rest of our packages. It would be much cleaner if we could run the OAS CI jobs on our docker containers where we have working environments with all the dependencies OAS needs and with stable and latests versions of things that match our other packages.

Expected time until merged

Type of change

• Bugfix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (non-backwards-compatible fix or feature)
• Code style update (formatting, renaming)
• Refactoring (no functional changes, no API changes)
• Documentation update
• Maintenance update
• Other (please describe)

Testing

Checklist

• I have run flake8 and black to make sure the Python code adheres to PEP-8 and is consistently formatted
• I have formatted the Fortran code with fprettify or C/C++ code with clang-format as applicable
• I have run unit and regression tests which pass locally with my changes
• I have added new tests that prove my fix is effective or that my feature works
• I have added necessary documentation

[eirikurj]

Added the pipeline, it should start soon.

[A-CGray]

The VSP test is failing because the vsp file it depends on isn't moved to the python installation directory but the tests are because they're inside the openaerostruct package directory. I think we should move all the tests out of the package directory into their own top level directory like we do for all our other packages