Fix tests and add conversion test

tests/topologies/1_5_docker_remote/after/1_5_docker_remote.gns3

@@ -23,11 +23,11 @@
                 "label": {
                     "rotation": 0,
                     "style": "font-family: TypeWriter;font-size: 10;font-weight: bold;fill: #000000;fill-opacity: 1.0;",
-                    "text": "remote_busybox-1",
+                    "text": "remote-busybox-1",
                     "x": -20,
                     "y": -25
                 },
-                "name": "remote_busybox-1",
+                "name": "remote-busybox-1",
                 "node_id": "d397ef5a-84f1-4b6b-9d44-671937ec7781",
                 "node_type": "docker",
                 "port_name_format": "Ethernet{0}",

tests/topologies/1_5_docker_remote/before/1_5_docker_remote.gns3

@@ -11,7 +11,7 @@
                 "label": {
                     "color": "#ff000000",
                     "font": "TypeWriter,10,-1,5,75,0,0,0,0,0",
-                    "text": "remote_busybox-1",
+                    "text": "remote-busybox-1",
                     "x": -20.4453125,
                     "y": -25.0
                 },
@@ -32,7 +32,7 @@
                     "console_resolution": "1024x768",
                     "console_type": "telnet",
                     "image": "busybox:latest",
-                    "name": "remote_busybox-1"
+                    "name": "remote-busybox-1"
                 },
                 "server_id": 2,
                 "type": "DockerVM",