MizuRoute compsets fail in first version put into cesm2_3_alpha16b

### Brief summary of bug

At least on Cheyenne mizuRoute compsets fail in the first version they were put into cesm2_3_alpha16b.
This was neglected to be seen because of #238

### General bug information

**CESM version you are using:** cesm2_3_alpha16b and onto at least cesm2_3_alpha16h

**Machine you are using:**Cheyenne

**Have you modified the code? (If so, please point us to you changes.):** No
### Details of bug

For example this test fails:

SMS_D_Mmpi-serial.5x5_amazon_r05.I2000Clm50SpMizGs.cheyenne_intel.mizuroute-default