HEMCO restart tests fail

[fvitt]

What happened?

When HEMCO emissions are used restarts are not bit-for-bit the same as continuous runs.
Regression testing give this failure:
FAIL ERP_Ln9_Vnuopc.f09_f09_mg17.FCSD_HCO.cheyenne_intel.cam-outfrq9s COMPARE_base_rest

Until this is fixed, HEMCO configurations will not be supported.

What are the steps to reproduce the bug?

ERP_Ln9_Vnuopc.f09_f09_mg17.FCSD_HCO.cheyenne_intel.cam-outfrq9s COMPARE_base_rest

What CAM tag were you using?

cam6_3_118

What machine were you running CAM on?

CISL machine (e.g. cheyenne)

What compiler were you using?

Intel

Path to a case directory, if applicable

No response

Will you be addressing this bug yourself?

No

Extra info

@jimmielin will need to provide hemco external updates to address this reproducibility / restart issue.