Update for cime6.0.15

ChangeLog

@@ -1,5 +1,40 @@
 ======================================================================
 
+Originator: Chris Fischer
+Date: 3-11-2022
+Tag: cime6.0.15
+Answer Changes: None
+Tests: scripts_regression_tests
+Dependencies:
+
+Brief Summary:
+    - Fix generated baseline from disappearing when using --retry.
+    - Comparison test class with arbitrary number of instances.
+    - Fixes extraneous warnings and machine detection
+    - neon inputdata update
+
+User interface changes:
+
+PR summary: git log --oneline --first-parent [previous_tag]..master
+4227e709c Merge pull request #4195 from ESMCI/fischer/retry
+3cbf732a4 Merge pull request #4169 from alperaltuntas/system_tests_compare_multi
+88f216f97 Merge pull request #4187 from jasonb5/fix_machine_warning
+479181641 Merge pull request #4190 from jedwards4b/neon_inputdata_update
+
+
+Modified files: git diff --name-status [previous_tag]
+M       config/cesm/config_files.xml
+M       scripts/create_test
+M       scripts/lib/CIME/Servers/ftp.py
+M       scripts/lib/CIME/Servers/wget.py
+A       scripts/lib/CIME/SystemTests/system_tests_compare_n.py
+M       scripts/lib/CIME/XML/machines.py
+M       scripts/lib/CIME/test_scheduler.py
+
+
+======================================================================
+======================================================================
+
 Originator: Chris Fischer
 Date: 3-1-2022
 Tag: cime6.0.14