Uncomment fates_hdim_levleaf dimension

[ekluzek]

Description of changes

This reverts commit 5e1adf8.

And hence fixed #1561 by uncommenting fates_levleaf dimension.

This PR corresponds to the fates PR NGEET/fates#752.

Specific notes

Contributors other than yourself, if any: @glemieux @adrifoster

CTSM Issues Fixed (include github issue #):
Fixes #1561
Fixes #1485

Are answers expected to change (and if so in what way)? FATES only for field list, one test has roundoff level differences
SMS_Lm3_D_Mmpi-serial.1x1_brazil.I2000Clm50FatesCruRsGs.cheyenne_intel.clm-FatesColdDefHydro

Any User Interface Changes (namelist or namelist defaults changes)? No

Testing performed, if any: None so far, will run regular tests
Test should be identical. FATES tests should only be different due to field list.

[ekluzek]

Since this requires a FATES PR that hasn't come in yet, we will hold off on this and bring it in with another FATES update.

[glemieux]

The aux_clm tests on cheyenne are all b4b against the dev070 baseline, with two exceptions. The DIFF for the one FatesHydro with very small (E-19) differences that are expected per NGEET/fates#752. I'm seeing a failure for SMS_D_Ld9.f09_g17.I1850Clm50BgcNoAnthro.cheyenne_intel.clm-decStart1851_noinitial which has a pretty large stack trace that I won't reproduce here. It looks like it might be an issue with ESMF? The location of the test suite is here: /glade/u/home/glemieux/scratch/ctsm-tests/tests_vaibin-ctsmdev070-auxclm.

Testing on izumi is in progress.

[glemieux]

Izumi test results look good. All expected aux_clm and fates tests all pass b4b. The one DIFF in the FATES suite is a hydro testmod with expected very small differences. Folder locations:
/scratch/cluster/glemieux/ctsm-tests/tests_vai-bin-aux_clm
/scratch/cluster/glemieux/ctsm-tests/tests_vai-bin-fates

[glemieux]

I'm seeing a failure for SMS_D_Ld9.f09_g17.I1850Clm50BgcNoAnthro.cheyenne_intel.clm-decStart1851_noinitial which has a pretty large stack trace that I won't reproduce here. It looks like it might be an issue with ESMF?

Upon re-submission the test passes b4b.

[glemieux]

Re-running tests as we decided to integrate the fates ers sp mode fix (NGEET/fates#821) prior to integrating the this PR.

Izumi: All expected aux_clm tests pass B4B: /scratch/cluster/glemieux/ctsm-tests/tests_vai-bin-aux_clm-ersfix

Cheyenne:
All expected aux_clm tests pass B4B, with the exception of one fates hydro testmod DIFF, which has been deemed acceptable per NGEET/fates#752 (comment). There was a bit of a 'hiccup' that seemed to cause a few fine resolution grids to hit the wall clock time, but upon re-submission, they all complete with an expected run time. My suspicion that it was a temporary machine issue is given that the testmods affected were pretty disparate in setup aside from the grid size.
Test location: /glade/u/home/glemieux/scratch/ctsm-tests/tests_vaibin-ctsmdev070-auxclm-ersfix