Description of problem:
@host.operatingsystem.password_hash should work with safe mode enabled

Version-Release number of selected component (if applicable):
foreman 1-10

How reproducible:
100%

Steps to Reproduce:
1. try using @host.operatingsystem.password_hash in a KS template with safe_mode render set to true

Actual results:
KS render error

Expected results:
KS to render