Added newton_krylov_spinup testmod and corresponding new test

SMS_Ly5_Mmpi-serial.1x1_brazil.IHistClm50BgcQianRs.cheyenne_intel.clm-newton_krylov_spinup

cime_config/testdefs/testlist_clm.xml

@@ -540,6 +540,15 @@
       <option name="comment"  >Test soil_decomp_method = 'MIMICSWieder2015'</option>
     </options>
   </test>
+  <test name="SMS_Ly5_Mmpi-serial" grid="1x1_brazil" compset="IHistClm50BgcQianRs" testmods="clm/newton_krylov_spinup">
+    <machines>
+      <machine name="cheyenne" compiler="intel" category="aux_clm"/>
+    </machines>
+    <options>
+      <option name="wallclock">00:20:00</option>
+      <option name="comment"  >Test soil_decomp_method = 'MIMICSWieder2015'</option>
+    </options>
+  </test>
   <test name="ERP_D_P36x2_Ld3" grid="f10_f10_mg37" compset="I2000Clm50BgcCru" testmods="clm/flexCN_FUN">
     <machines>
       <machine name="cheyenne" compiler="intel" category="aux_clm"/>

cime_config/testdefs/testmods_dirs/clm/newton_krylov_spinup/README

@@ -0,0 +1,8 @@
+slevis 2022/2/1:
+This testmod tests the newton_krylov_spinup usermod found in
+cime_config/usermods_dirs/newton_krylov_spinup
+combined with the mimics testmod.
+
+By default this usermod runs for 20 yrs and writes a history file at that
+time. To save time running the test-suite, we're changing
+hist_nhtfrq = 0,-43800 (from 0,-175200)

cime_config/testdefs/testmods_dirs/clm/newton_krylov_spinup/include_user_mods

@@ -0,0 +1,2 @@
+../mimics
+../../../../usermods_dirs/newton_krylov_spinup

cime_config/testdefs/testmods_dirs/clm/newton_krylov_spinup/user_nl_clm

@@ -0,0 +1 @@
+hist_nhtfrq = 0,-43800

cime_config/usermods_dirs/newton_krylov_spinup/README

@@ -0,0 +1,4 @@
+user_nl_clm contains this line:
+hist_nhtfrq = 0,-175200
+0 means monthly history frequency and
+-175200 means 20 years history frequency (indicated in hours)

doc/ChangeLog

@@ -1,7 +1,7 @@
 ===============================================================
 Tag name: ctsm5.1.dev074
 Originator(s): slevis (Samuel Levis,SLevis Consulting,303-665-1310)
-Date: Fri Jan 28 18:40:45 MST 2022
+Date: Tue Feb  1 18:02:39 MST 2022
 One-line Summary: Introduce vert. resolved MIMICS as new method to solve below ground decomp.
 
 Purpose and description of changes
@@ -71,33 +71,18 @@ Changes to tests or testing:
  New test-suite tests:
  ERP_D_P36x2_Ld3.f10_f10_mg37.I1850Clm51BgcCrop.cheyenne_gnu.clm-mimics
  SMS_Ld5_Mmpi-serial.1x1_brazil.IHistClm50BgcQianRs.izumi_gnu.clm-mimics
+ SMS_Ly5_Mmpi-serial.1x1_brazil.IHistClm50BgcQianRs.cheyenne_intel.clm-newton_krylov_spinup
 
 Testing summary:
 ----------------
 
  [PASS means all tests PASS; OK means tests PASS other than expected fails.]
 
-  build-namelist tests (if CLMBuildNamelist.pm has changed):
-
-    cheyenne -
-
-  tools-tests (test/tools) (if tools have been changed):
-
-    cheyenne -
-
   regular tests (aux_clm: https://github.com/ESCOMP/CTSM/wiki/System-Testing-Guide#pre-merge-system-testing):
 
     cheyenne ---- PASS
     izumi ------- OK (see answer changes below)
 
-  fates tests: (give name of baseline if different from CTSM tagname, normally fates baselines are fates-<FATES TAG>-<CTSM TAG>)
-    cheyenne ----
-    izumi -------
-
-  any other testing (give details below):
-
-If the tag used for baseline comparisons was NOT the previous tag, note that here:
-
 
 Answer changes
 --------------

doc/ChangeSum

@@ -1,6 +1,6 @@
 Tag                   Who      Date  Summary
 ============================================================================================================================
-    ctsm5.1.dev074   slevis 01/28/2022 Introduce vert. resolved MIMICS as new method to solve below ground decomp.
+    ctsm5.1.dev074   slevis 02/01/2022 Introduce vert. resolved MIMICS as new method to solve below ground decomp.
     ctsm5.1.dev073    sacks 01/25/2022 Some fixes for Gregorian calendar
     ctsm5.1.dev072   negins 01/17/2022 mksurfdat toolchain part 1: gen_mksurf_namelist
     ctsm5.1.dev071 glemieux 01/16/2022 Small changes to enable new fates dimension and update fates tag