Make pid extraction less dependent on the format

Author: michaelklishin

test/src/com/rabbitmq/tools/Host.java

@@ -133,14 +133,12 @@ public int getPeerPort() {
     public static List<ConnectionInfo> listConnections() throws IOException {
         String output = capture(rabbitmqctl("list_connections pid peer_port").getInputStream());
         String[] allLines = output.split("\n");
-        // this pattern must match rabbit_misc:pid_to_string/1
-        Pattern pattern = Pattern.compile("(<.+\\.\\d+\\.\\d+\\.\\d+>)\\s+(\\d+)");
 
         ArrayList<ConnectionInfo> result = new ArrayList<ConnectionInfo>();
         for (String line : Arrays.copyOfRange(allLines, 1, allLines.length - 1)) {
-            Matcher m = pattern.matcher(line);
-            m.find();
-            result.add(new ConnectionInfo(m.group(1), Integer.valueOf(m.group(2))));
+            // line: <rabbit@mercurio.1.11491.0>	58713
+            String[] columns = line.split("\t");
+            result.add(new ConnectionInfo(columns[0], Integer.valueOf(columns[1])));
         }
         return result;
     }