Revert "Properly look for parent become attribute"

This reverts commit 1b46a422aa.

lib/ansible/playbook/become.py

@@ -106,11 +106,10 @@ class Become:
         '''
         Override for the 'become' getattr fetcher, used from Base.
         '''
-        value = self._attributes['become']
         if hasattr(self, '_get_parent_attribute'):
-            if self._get_parent_attribute('become'):
-                return True
-        return value
+            return self._get_parent_attribute('become')
+        else:
+            return self._attributes['become']
 
     def _get_attr_become_method(self):
         '''

lib/ansible/playbook/task.py

@@ -417,7 +417,7 @@ class Task(Base, Conditional, Taggable, Become):
 
     def _get_attr_any_errors_fatal(self):
         '''
-        Override for the 'any_errors_fatal' getattr fetcher, used from Base.
+        Override for the 'tags' getattr fetcher, used from Base.
         '''
         any_errors_fatal = self._attributes['any_errors_fatal']
         if hasattr(self, '_get_parent_attribute'):