Create a /server API for register servers

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

tests/handlers/api/test_server.py

@@ -0,0 +1,36 @@
+#!/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/>.
+
+
+def test_server_create(server, controller):
+
+    params = {
+        "server_id": "my_server_id",
+        "protocol": "http",
+        "host": "example.com",
+        "port": 84,
+        "user": "julien",
+        "password": "secure"
+    }
+    response = server.post("/servers", params)
+    assert response.status == 201
+    assert response.route == "/servers"
+    assert response.json["user"] == "julien"
+    assert "password" not in response.json
+
+    assert len(controller.servers) == 1
+    assert controller.servers["my_server_id"].host == "example.com"