hardware grains fix and lenny gets his own package list

_grains/hardware.py

@@ -1,5 +1,6 @@
 #!/usr/bin/env python3
 import re
+import os.path
 
 def _hardware():
     h = "unknown"
@@ -12,7 +13,7 @@ def _hardware():
             h = "Pine64"
         if re.match("Hardware\s+:\sFreescale\si.MX6\sQuad\/DualLite", line):
             h = "RiotBoard"
-    if h == "unknown":
+    if h == "unknown" and os.path.isfile("/etc/armbian-release"):
         for line in open("/etc/armbian-release","r").readlines():
             if re.match("BOARD=espressobin", line):
                 h = "Espressobin"