[trivial] Fix argument descriptions

Fix description of arguments for nodes, port, chassis.

Change-Id: I9b0c97163ce3a84215309f34f16074140f90f8d1

ironic/api/controllers/v1/node.py

@@ -1197,7 +1197,7 @@ class NodeVIFController(rest.RestController):
     def post(self, vif):
         """Attach a VIF to this node
 
-        :param vif_info: a dictionary of information about a VIF.
+        :param vif: a dictionary of information about a VIF.
             It must have an 'id' key, whose value is a unique identifier
             for that VIF.
         """

ironic/objects/chassis.py

@@ -50,6 +50,7 @@ class Chassis(base.IronicObject, object_base.VersionedObjectDictCompat):
     def get(cls, context, chassis_id):
         """Find a chassis based on its id or uuid and return a Chassis object.
 
+        :param context: Security context
         :param chassis_id: the id *or* uuid of a chassis.
         :returns: a :class:`Chassis` object.
         """

ironic/objects/node.py

@@ -162,6 +162,7 @@ class Node(base.IronicObject, object_base.VersionedObjectDictCompat):
     def get(cls, context, node_id):
         """Find a node based on its id or uuid and return a Node object.
 
+        :param context: Security context
         :param node_id: the id *or* uuid of a node.
         :returns: a :class:`Node` object.
         """

ironic/objects/port.py

@@ -66,6 +66,7 @@ class Port(base.IronicObject, object_base.VersionedObjectDictCompat):
         Find a port based on its id or uuid or MAC address and return a Port
         object.
 
+        :param context: Security context
         :param port_id: the id *or* uuid *or* MAC address of a port.
         :returns: a :class:`Port` object.
         :raises: InvalidIdentity