Switch global ocean in init mode to E3SM shared constants

[xylar]

This merge also migrates the computation of the Coriolis parameter to using E3SM shared constants.

The unused constants module imports are removed from several init mode utilities to ensure that they don't use constants that are inconsistent with E3SM's versions.

I have make local symlinks to the shared constants and kinds file for convenience in building using MPAS-Ocean's not-very-sophisticated build system.

[xylar]

@proteanplanet, this my proposed fix to E3SM-Project#6387. Please have a look, though I am fully aware that MPAS-Ocean init mode is nothing you have detailed knowledge about (nor should you!).

@mark-petersen, I know I'm asking a lot of you at a busy time but please give this a look when you can.

[xylar]

Testing

I ran the pr suite on Chrysalis with Intel and OpenMPI using this branch, and using MPAS-Dev/compass#810 as a baseline (because this addresses recent non-BFB issue on Chrysalis).

Tests other than global ocean are BFB as expected. Global ocean forward runs show differences in T, S, layer thickness and velocity on the order of 1e-8 (so definitely not negligible).

[proteanplanet]

We should include a sea ice solution in this. I will take care of that this week.

[xylar]

@proteanplanet, since these changes are specific to mpas-ocean standalone, we shouldn't mix them with E3SM changes to any component. We should take care of that in a separate PR.