finatra: Properly log bound address in server startup

Problem

The http server doesn't properly log the bound address of the
started listening server such that when the ephemeral port (0)
is used, the logged output still shows the server bound to port
0.

Solution

Ensure we log the bound address of the server and make thrift
server logging (which was logging the raw InetSocketAddress)
to be the same.

Result:

Thrift before:
[main] INFO com.twitter.echo.thrift.EchoThriftServerMain$ - thrift server started on port: /0:0:0:0:0:0:0:0:50058
Thrift after:
[main] INFO com.twitter.echo.thrift.EchoThriftServerMain$ - admin http server started on port 50058

Http before:
[main] INFO com.twitter.echo.http.EchoHttpServerMain$ - http server started on port:  0.0.0.0/0.0.0.0:50084
[main] INFO com.twitter.echo.http.EchoHttpServerMain$ - http server started on port:  0.0.0.0/0.0.0.0:0 (when using the emphermal port)
Http after:
[main] INFO com.twitter.echo.http.EchoHttpServerMain$ - http server started on port 50084

Differential Revision: https://phabricator.twitter.biz/D563758

CHANGELOG.rst

@@ -22,6 +22,9 @@ Added
 Changed
 ~~~~~~~
 
+* http: The http server did not properly log the bound address on server startup. Fix this
+  and make the thrift server consistent. ``PHAB_ID=D563758``
+
 * utils: (BREAKING API CHANGE) Rename `maybeIsCaseClass` to `notCaseClass` in
   `ClassUtils` and change the scope of the method. ``PHAB_ID=D556169``
 

http/src/main/scala/com/twitter/finatra/http/servers.scala

@@ -316,7 +316,7 @@ trait HttpServerTrait extends TwitterServer {
           info(s"http server announced to $addr")
           httpServer.announce(addr)
       }
-      info(s"http server started on port: $address")
+      info(s"http server started on port ${PortUtils.getPort(httpServer.boundAddress)}")
     }
 
     // START HTTPS

thrift/src/main/scala/com/twitter/finatra/thrift/servers.scala

@@ -194,7 +194,7 @@ trait ThriftServerTrait extends TwitterServer {
         info(s"thrift server announced to $addr")
         thriftServer.announce(addr)
     }
-    info(s"thrift server started on port: ${thriftPort.get}")
+    info(s"thrift server started on port ${PortUtils.getPort(thriftServer.boundAddress)}")
   }
 
   /* Overrides */