add Tliquidus_max namelist parameter to CICE

[eclare108213]

For detailed information about submitting Pull Requests (PRs) to the CICE-Consortium,
please refer to: https://github.com/CICE-Consortium/About-Us/wiki/Resource-Index#information-for-developers

PR checklist

• Short (1 sentence) summary of your PR:
  Add Tliquidus_max namelist parameter
• Developer(s):
  @eclare108213
• Suggest PR reviewers from list in the column to the right.
• Please copy the PR test results link or provide a summary of testing completed below.
  ran a single case on my laptop:

PASS conda_macos_smoke_gx3_1x1 build
PASS conda_macos_smoke_gx3_1x1 run 9.26 1.59 5.53
PASS conda_macos_smoke_gx3_1x1 test
PASS conda_macos_smoke_gx3_1x1 compare cice0 9.15 1.60 5.50
#machinfo = Generic conda setup
#envinfo macos = (NOTE: may vary) GNU Fortran 7.3.0, clang 9.0.1, openmpi 4.0.2, netcdf 4.5.2

• How much do the PR code changes differ from the unmodified code?
  • bit for bit
  • different at roundoff level
  • more substantial
• Does this PR create or have dependencies on Icepack or any other models?
  • Yes
  • No
• Does this PR update the Icepack submodule? If so, the Icepack submodule must point to a hash on Icepack's main branch.
  • Yes
  • No but it will need to, eventually
• Does this PR add any new test cases?
  • Yes
  • No
• Is the documentation being updated? ("Documentation" includes information on the wiki or in the .rst files from doc/source/, which are used to create the online technical docs at https://readthedocs.org/projects/cice-consortium-cice/. A test build of the technical docs will be performed as part of the PR testing.)
  • Yes
  • No, does the documentation need to be updated at a later time?
    • Yes
    • No
• Please provide any additional information or relevant details below:

See comments in E3SM-Project/Icepack#13

[apcraig]

I tested this with the appropriate version of Icepack and all seems fine. I will merge this then update Icepack in a separate PR.

[apcraig]

I'm merging this even though it needs a newer version of Icepack. That step will be taken with a separate PR.