Merge branch 'ndk/machinesfiles/pm-cpu-add-overrun' into next (PR #6709)

Add overrun as an option for submitting jobs via CIME on pm-cpu/pm-gpu.
Currently, jobs can submit to the overrun qos with case.submit -a="-q overrun".
However, without this PR, tests like this will fail:

create_test SMS_D.ne4pg2_oQU480.F2010 --compiler gnu -q overrun
[bfb]

cime_config/machines/config_batch.xml

@@ -448,6 +448,7 @@
       <queue walltimemax="00:45:00" nodemax="1792" default="true">regular</queue>
       <queue walltimemax="00:45:00" nodemax="1792" strict="true">preempt</queue>
       <queue walltimemax="00:45:00" nodemax="1792" strict="true">shared</queue>
+      <queue walltimemax="00:45:00" nodemax="1792" strict="true">overrun</queue>
       <queue walltimemax="00:15:00" nodemax="4" strict="true">debug</queue>
     </queues>
   </batch_system>
@@ -502,10 +503,11 @@
       <queue walltimemax="00:30:00" nodemax="3072" default="true">regular</queue>
       <queue walltimemax="00:30:00" nodemax="3072" strict="true">preempt</queue>
       <queue walltimemax="00:30:00" nodemax="3072" strict="true">shared</queue>
+      <queue walltimemax="00:30:00" nodemax="3072" strict="true">overrun</queue>
       <queue walltimemax="00:30:00" nodemax="8" strict="true">debug</queue>
     </queues>
   </batch_system>
-  
+
   <batch_system MACH="alvarez" type="nersc_slurm">
     <directives>
       <directive> --constraint=cpu</directive>