Add new AMI and ARI events for connected line changes on a channel.

The AMI event is called NewConnectedLine and the ARI event is called
ChannelConnectedLine.

ASTERISK-24554 #close
Reported by Matt Jordan

Review: https://reviewboard.asterisk.org/r/4231



git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/13@429064 65c4cc65-6c06-0410-ace0-fbb531ad65f3

rest-api/api-docs/events.json

@@ -165,7 +165,8 @@
 				"Dial",
 				"StasisEnd",
 				"StasisStart",
-				"TextMessageReceived"
+				"TextMessageReceived",
+				"ChannelConnectedLine"
 			]
 		},
 		"DeviceStateChanged": {
@@ -712,6 +713,17 @@
 					"type": "Endpoint"
 				}
 			}
+		},
+		"ChannelConnectedLine": {
+			"id": "ChannelConnectedLine",
+			"description": "Channel changed Connected Line.",
+			"properties": {
+				"channel": {
+					"required": true,
+					"type": "Channel",
+					"description": "The channel whose connected line has changed."
+				}
+			}
 		}
 	}
 }