cosine_bell (probably other spherical tests) use wrong refinement factors

[xylar]

They should use the spherical refinement factors but they use the planar ones:

polaris/polaris/ocean/tasks/cosine_bell/__init__.py

Lines 141 to 146 in 018ae1a

	if refinement == 'time':
	option = 'refinement_factors_time'
	else:
	option = 'refinement_factors_space'
	refinement_factors = config.getlist('convergence', option, dtype=float)

[xylar]

I was trying to make a 960 km icos mesh and it didn't work because of this bug.

[xylar]

The issue is only with the cosine bell and not with geostrophic or sphere_transport.