Testing Pose bindings/numeric unit tests with standard PyRosetta builds (#708)
This PR splits out two tests from `T900_distributed.py` that don't
require the `pyrosetta.distributed` framework, but instead only rely on
`numpy` and ought to be tested by the standard PyRosetta builds.
---------
Co-authored-by: Sergey Lyskov <3302736+lyskov@users.noreply.github.com>