Log: scheduler: treat config errors as processing errors

libcrmcommon has two sets of variables for special error conditions:
crm_config_error and crm_config_warning for invalid usage in the CIB,
and was_processing_error and was_processing_warning for other types of
problems encountered while running the scheduler.

The crm_config_* variables affect crm_verify's exit status and a log message,
while the was_processing_* variables affect the name the CIB input is saved as
(pe-input-N, pe-error-N, pe-warn-N) and a different log message.

This commit treats all configuration errors as also being processing errors so
that both the input name and logs indicate an error has occurred.