plugin/interface: add if_dropped

Author: pommi

plugin/interface.json

@@ -47,5 +47,21 @@
 			}
 		},
 		"legend_format": "%5.1lf%s"
+	},
+	"if_dropped": {
+		"title": "Interface Packets dropped ({{PI}}) on {{HOST}}",
+		"vertical": "Packets per second",
+		"type": "io",
+		"legend": {
+			"rx": {
+				"name": "Receive",
+				"color": "0000ff"
+			},
+			"tx": {
+				"name": "Transmit",
+				"color": "00b000"
+			}
+		},
+		"legend_format": "%5.1lf%s"
 	}
 }