add data source for check_memory

data/check_memory.json

@@ -0,0 +1,15 @@
+{
+  "description": "This is the 'check_memory' Nagios plugin, available e.g. in '/usr/lib/nagios/plugins/'. The read file content is limited to the first line.\n",
+  "functions": {
+    "file-read": [
+      {
+        "code": "check_memory --extra-opts=@[file]\n"
+      }
+    ],
+    "sudo": [
+      {
+        "code": "sudo check_memory --extra-opts=@[file]\n"
+      }
+    ]
+  }
+}