Ensure bridge record error responses validate

This adds the list of expected errors to the /bridges/{bridgeId}/record
ARI documentation so that outbound 4xx errors validate properly.
Previously, this would result in a response validation failure.

(closes issue ASTERISK-22627)
Reported by: Joshua Colp
........

Merged revisions 401018 from http://svn.asterisk.org/svn/asterisk/branches/12


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@401019 65c4cc65-6c06-0410-ace0-fbb531ad65f3

rest-api/api-docs/bridges.json

@@ -453,6 +453,20 @@
 								]
 							}
 						}
+					],
+					"errorResponses": [
+						{
+							"code": 400,
+							"reason": "Recording name invalid"
+						},
+						{
+							"code": 404,
+							"reason": "Bridge not found"
+						},
+						{
+							"code": 409,
+							"reason": "Bridge not in Stasis application; Recording already in progress"
+						}
 					]
 				}
 			]