restore behavior defaults to a dictionary

Prior to PR #2454, behavioral data defaulted to a dictionary pointing to
a list. The PR changed it to an empty list. This is expected to be a
dictionary everywhere, and most code expects the "processes" key to
exist and either be empty or have process data in it.

modules/processing/behavior.py

@@ -1182,7 +1182,7 @@ def run(self):
         @return: results dict.
         """
 
-        behavior = []
+        behavior = {"processes": []}
         if path_exists(self.logs_path) and len(os.listdir(self.logs_path)) != 0:
             behavior = {"processes": Processes(self.logs_path, self.task, self.options).run()}