Merge branch 'jgfouca/update_cime_subm_2024_08_26' into next (PR #6565)

... to af3eab5b8a213e79923551e7f9d9f56edb944c0f
cime6.1.18

From cime6.0.248

Changes:
1) Generalize _hists_match for mom6 files
2) support append in config_pes.xml overrides field
3) Add case git: Adds a case interface to git.
4) It creates a local git repository when case.setup is
   run and updates that repository with each action that triggers an
   update of the CaseStatus file. Optionally a remote repository can be
   attached by setting CASE_GIT_REPOSITORY to the name of the remote
   repository.
5) xmlchange: Add documentation for setting values with commas
6) Remove mct for cesm
7) remove load_balancing_tool, broken and unsupported

Fixes:
1) Fix/rest n in tests: move the computation of REST_N into the python
2) cprnc: need to make sure the directory exists before linking to it
3) check_lockedfiles call in xmlchange needs quiet=True
4) fixes detection of pfunit_path by making sure it exists
5) Fixes handling cprnc output
6) Fixes creating new environment with specific python version
7) Fixes query_config tool.
  * Adds longname to --grids
  * Fixes duplicate and empty choices
8) Fixes check_lockedfiles call in xmlchange
9) Fix list_e3sm_tests tool

[BFB]

* jgfouca/update_cime_subm_2024_08_26:
  Fix append feature
  Revert ers change
  Disable git interface
  Update CIME submodule