Fix the boot_id precision alignment code on py3

Casting to float can raise a TypeError there.

lib/node.py

@@ -647,7 +647,7 @@ def matching(current, op, value):
             if op in ("<", ">", ">=", "<="):
                 try:
                     current = float(current)
-                except ValueError:
+                except (ValueError, TypeError):
                     return False
             if op == "=":
                 if current.lower() in ("true", "false"):