Use get_key instead of hardcoded names in sorted_stats

glances/plugins/glances_diskio.py

@@ -180,7 +180,7 @@ class Plugin(GlancesPlugin):
             msg = '{:>7}'.format('W/s')
             ret.append(self.curse_add_line(msg))
         # Disk list (sorted by name)
-        for i in self.sorted_stats('disk_name'):
+        for i in self.sorted_stats():
             # Is there an alias for the disk name ?
             disk_real_name = i['disk_name']
             disk_name = self.has_alias(i['disk_name'])

glances/plugins/glances_network.py

@@ -289,7 +289,7 @@ class Plugin(GlancesPlugin):
                 msg = '{:>7}'.format('Tx/s')
                 ret.append(self.curse_add_line(msg))
         # Interface list (sorted by name)
-        for i in self.sorted_stats('interface_name'):
+        for i in self.sorted_stats():
             # Do not display interface in down state (issue #765)
             if ('is_up' in i) and (i['is_up'] is False):
                 continue

glances/plugins/glances_plugin.py

@@ -286,8 +286,9 @@ class GlancesPlugin(object):
         """Get the short detected OS name (SNMP)."""
         return self._short_system_name
 
-    def sorted_stats(self, key):
+    def sorted_stats(self):
         """Get the stats sorted by an alias (if present) or key."""
+        key = self.get_key()
         return sorted(self.stats, key=lambda stat: tuple(map(
             lambda part: int(part) if part.isdigit() else part.lower(),
             re.split(r"(\d+|\D+)", self.has_alias(stat[key]) or stat[key])