ERR tests failing in cesm2_3_beta17

[jedwards4b]

Brief summary of bug

Testing
ERR_Ld5.f09_t061.B1850MOM.derecho_intel.allactive-defaultio
ERR.ne30pg3_t232.BLT1850_v0c.derecho_intel.allactive-defaultio

General bug information

CESM version you are using: cesm2_3_beta17

Machine you are using: derecho

Have you modified the code? (If so, please point us to you changes.): No

Details of bug

Tests fail in cesm2_3_beta17 due to the buildnml for case2 wanting a rpointer.ocn prior to building the case. This can be fixed with a minor change in the mom_interface buildnml file to avoid this error if running a testcase. However after making this change there is still an error in that the archiver is only saving the restart at the end of the run and the xml flag
DOUT_S_SAVE_INTERIM_RESTART_FILES doesn't seem to have any effect.

Steps to reproduce the problem. Include externals description file(s) and link to public repository

Screen output or log file showing the error message and context

[jedwards4b]

I think that the resolution here should be to add DOUT_S_SAVE_INTERIM_RESTART_FILES=TRUE to the config_tests.xml for the ERR test and to make sure that it works as intended. (writing the interum restarts to the archive/rest directory and creating the rpointer files required to restart the case.)