Changes

Spack updates (#173)

Updates to make cam work with the new spack system. This also includes changing the traditional "nelson" name for our machine to a general "larson-group" one. Also moving our custom cmake and config files from "cime_config_cesm_machines_files" to "custom_ccs_config_files" because the new build system in cam is named ccs_config.

* Initial changes to get code working with the new spack+module system. See https://github.com/larson-group/sys_admin/issues/829

* Making module versions specific in config_machines. This will prevent cam from breaking if someone installs another version of a package like esmf.

Making changes to jenkins tests to get running with new system and new Makefile changes. Also setting run_scam debug back to true by default.

Renaming tests to make clear which uses debugging and which doesnt. Intel-oneapi currently doesn't work with debugging, see https://github.com/larson-group/sys_admin/issues/829\#issuecomment-2212729099

The bin diff tests need to be run on carson because that's where we store the test config files that we use to store the results.

The module loading is handled by the ccs_config code, so we don't need module commands in jenkinsfiles. Also loading intel-oneapi-mkl for intel builds.