doc: fix http response event, Agent#getName

Removes the options block from the http 'response' event and attaches
it to Agent#getName where it belongs. Removes socketPath and documents
localAddress option.

PR-URL: #5993
Reviewed-By: James M Snell <jasnell@gmail.com>

doc/api/http.markdown

@@ -140,6 +140,13 @@ connection can be reused.  In the http agent, this returns
 CA, cert, ciphers, and other HTTPS/TLS-specific options that determine
 socket reusability.
 
+Options:
+
+- `host`: A domain name or IP address of the server to issue the request to.
+- `port`: Port of remote server.
+- `localAddress`: Local interface to bind for network connections when issuing
+  the request.
+
 ### agent.maxFreeSockets
 
 By default set to 256.  For Agents supporting HTTP KeepAlive, this
@@ -280,12 +287,6 @@ the client should send the request body.
 Emitted when a response is received to this request. This event is emitted only
 once. The `response` argument will be an instance of [`http.IncomingMessage`][].
 
-Options:
-
-- `host`: A domain name or IP address of the server to issue the request to.
-- `port`: Port of remote server.
-- `socketPath`: Unix Domain Socket (use one of host:port or socketPath)
-
 ### Event: 'socket'
 
 `function (socket) { }`