Some cleaning.

gns3server/compute/dynamips/nios/nio_generic_ethernet.py

@@ -67,4 +67,7 @@ class NIOGenericEthernet(NIO):
 
     def __json__(self):
 
-        return {"type": "nio_generic_ethernet", "ethernet_device": self._ethernet_device}
+        return {
+            "type": "nio_generic_ethernet",
+            "ethernet_device": self._ethernet_device
+        }

gns3server/compute/dynamips/nios/nio_linux_ethernet.py

@@ -66,4 +66,7 @@ class NIOLinuxEthernet(NIO):
 
     def __json__(self):
 
-        return {"type": "nio_linux_ethernet", "ethernet_device": self._ethernet_device}
+        return {
+            "type": "nio_linux_ethernet",
+            "ethernet_device": self._ethernet_device
+        }

gns3server/compute/dynamips/nios/nio_tap.py

@@ -60,4 +60,7 @@ class NIOTAP(NIO):
 
     def __json__(self):
 
-        return {"type": "nio_tap", "tap_device": self._tap_device}
+        return {
+            "type": "nio_tap",
+            "tap_device": self._tap_device
+        }

gns3server/compute/dynamips/nios/nio_udp.py

@@ -128,4 +128,9 @@ class NIOUDP(NIO):
 
     def __json__(self):
 
-        return {"type": "nio_udp", "lport": self._lport, "rport": self._rport, "rhost": self._rhost}
+        return {
+            "type": "nio_udp",
+            "lport": self._lport,
+            "rport": self._rport,
+            "rhost": self._rhost
+        }

gns3server/compute/dynamips/nios/nio_unix.py

@@ -81,4 +81,8 @@ class NIOUNIX(NIO):
 
     def __json__(self):
 
-        return {"type": "nio_unix", "local_file": self._local_file, "remote_file": self._remote_file}
+        return {
+            "type": "nio_unix",
+            "local_file": self._local_file,
+            "remote_file": self._remote_file
+        }

gns3server/compute/dynamips/nios/nio_vde.py

@@ -81,4 +81,8 @@ class NIOVDE(NIO):
 
     def __json__(self):
 
-        return {"type": "nio_vde", "local_file": self._local_file, "control_file": self._control_file}
+        return {
+            "type": "nio_vde",
+            "local_file": self._local_file,
+            "control_file": self._control_file
+        }