Fix: scheduler: print to stdout when appropriate

The scheduler libaries need to print certain items to stdout when called via
the command line (i.e. crm_simulate). Previously, they used pe_flag_sanitized
to detect this situation. However, crm_simulate does not set that flag when
called with the live CIB. Instead, use a new flag for the purpose.

This could be considered a regression in 1.1.18 via commit 349a37f5b

Closes CLBZ#5353