Merge branch E3SM-Project/ndk/machinefiles/adjust-large-eamxx-test-suite (PR #7562)

Adjust new and unused eamxx_large test suite

Author: ndkeen

cime_config/tests.py

@@ -856,7 +856,7 @@
         "time"  : "01:00:00",
         "tests" : (
             "SMS.ne120pg2_ne120pg2.F2010-SCREAMv1.eamxx-L128",
-            "PEM_Ld1.ne120pg2_ne120pg2.F2010-SCREAMv1.eamxx-L128",
+            #"PEM_Ld1.ne120pg2_ne120pg2.F2010-SCREAMv1.eamxx-L128", # second test hits OOM, need either P2048 or change def pelayout
             "ERS_Lh6.ne120pg2_ne120pg2.F2010-SCREAMv1.eamxx-L128--eamxx-prod",
             "SMS_D_Lh6.ne120pg2_ne120pg2.F2010-SCREAMv1.eamxx-prod",
             "SMS.ne256pg2_ne256pg2.F2010-SCREAMv1",