Adding an additional 3.5 host on a system that was initially deployed with HE from 3.4 fails with error 'Setup validation: cannot marshal None unless allow_none is enabled'
Issue
If your RHEV environment was upgraded from RHEV 3.4 hosted engine (HE) to RHEV 3.5 HE, re-installing a HE host as version 7 and re-adding it to your environment fails.
Setup validation: cannot marshal None unless allow_none is enabled
Environment
Red Hat Enterprise Virtualization (RHEV) 3.5
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