Create a /server API for register servers

This allow to push to the controller information about
the connection to a server.

gns3server/controller/__init__.py

@@ -22,6 +22,9 @@ from ..config import Config
 class Controller:
     """The controller manage multiple gns3 servers"""
 
+    def __init__(self):
+        self._servers = {}
+
     def isEnabled(self):
         """
         :returns: True if current instance is the controller
@@ -29,6 +32,19 @@ class Controller:
         """
         return Config.instance().get_section_config("Server").getboolean("controller")
 
+    def addServer(self, server):
+        """
+        Add a server to the dictionnary of servers controlled by GNS3
+        """
+        self._servers[server.id] = server
+
+    @property
+    def servers(self):
+        """
+        :returns: The dictionnary of servers managed by GNS3
+        """
+        return self._servers
+
     @staticmethod
     def instance():
         """

gns3server/controller/server.py

@@ -0,0 +1,63 @@
+#!/usr/bin/env python
+#
+# Copyright (C) 2016 GNS3 Technologies Inc.
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+
+class Server:
+    """
+    A GNS3 server.
+    """
+
+    def __init__(self, server_id, protocol="http", host="localhost", port=8000, user=None, password=None):
+        self._id = server_id
+        self._protocol = protocol
+        self._host = host
+        self._port = port
+        self._user = user
+        self._password = password
+        self._connected = False
+        # The remote server version
+        self._version = None
+
+    @property
+    def id(self):
+        """
+        :returns: Server identifier (string)
+        """
+        return self._id
+
+    @property
+    def host(self):
+        """
+        :returns: Server host (string)
+        """
+        return self._host
+
+    def __json__(self):
+        return {
+            "server_id": self._id,
+            "protocol": self._protocol,
+            "host": self._host,
+            "port": self._port,
+            "user": self._user,
+            "connected": self._connected,
+            "version": self._version
+        }
+
+    def __eq__(self, other):
+        if not isinstance(other, Server):
+            return False
+        return other._id == self._id