fixed environment inheritance

lib/ansible/playbook/block.py

@@ -310,11 +310,9 @@ class Block(Base, Become, Conditional, Taggable):
         '''
         Override for the 'tags' getattr fetcher, used from Base.
         '''
-        environment = self._attributes['tags']
+        environment = self._attributes['environment']
         if environment is None:
-            environment = dict()
-
-        environment = self._get_parent_attribute('environment', extend=True)
+            environment = self._get_parent_attribute('environment', extend=True)
 
         return environment
 

lib/ansible/playbook/task.py

@@ -218,6 +218,9 @@ class Task(Base, Conditional, Taggable, Become):
         Override post validation of vars on the play, as we don't want to
         template these too early.
         '''
+        if value is None:
+            return dict()
+
         for env_item in value:
             if isinstance(env_item, (string_types, AnsibleUnicode)) and env_item in templar._available_variables.keys():
                 self._display.deprecated("Using bare variables for environment is deprecated. Update your playbooks so that the environment value uses the full variable syntax ('{{foo}}')")
@@ -347,11 +350,9 @@ class Task(Base, Conditional, Taggable, Become):
         '''
         Override for the 'tags' getattr fetcher, used from Base.
         '''
-        environment = self._attributes['tags']
+        environment = self._attributes['environment']
         if environment is None:
-            environment = dict()
-
-        environment = self._get_parent_attribute('environment', extend=True)
+            environment = self._get_parent_attribute('environment')
 
         return environment
 

lib/ansible/plugins/action/__init__.py

@@ -116,6 +116,8 @@ class ActionBase:
                 environments = [ environments ]
 
             for environment in environments:
+                if environment is None:
+                    continue
                 if not isinstance(environment, dict):
                     raise AnsibleError("environment must be a dictionary, received %s (%s)" % (environment, type(environment)))
                 # very deliberatly using update here instead of combine_vars, as