Move SBATCH_DEBUG to xml envars

Set SBATCH_DEBUG via the envars in the xml instead
of as an ENTITY at the top. The setting now exports
with job submissions.

Refs NOAA-EMC#619

workflow/rocoto/tasks.py

@@ -63,6 +63,10 @@ def __init__(self, app_config: AppConfig, cdump: str) -> None:
                       'cyc': '<cyclestr>@H</cyclestr>',
                       'COMROOT': self._base.get('COMROOT'),
                       'DATAROOT': self._base.get('DATAROOT')}
+
+        if self._base['DEBUG'] and self.app_config.scheduler in ['slurm']:
+            envar_dict['SBATCH_DEBUG'] = '2'
+
         self.envars = self._set_envars(envar_dict)
 
     @staticmethod

workflow/rocoto/workflow_xml.py

@@ -64,9 +64,6 @@ def _get_definitions(self) -> str:
 
         entity['MAXTRIES'] = self.rocoto_config['maxtries']
 
-        if self._base['DEBUG'] and self._app_config.scheduler in ['slurm']:
-            entity['SBATCH_DEBUG'] = '2'
-
         # Put them all in an XML key-value syntax
         strings = []
         for key, value in entity.items():