Add support for the ipsets section

Addresses #21

Author: Jonathan Lassoff

main.go

@@ -30,6 +30,7 @@ var (
 		"extraDNSRecords": handleArray(),
 		"grants":          handleArray(),
 		"groups":          handleObject(),
+		"ipsets":          handleObject(),
 		"nodeAttrs":       handleArray(), // TODO: need to merge anything?
 		"postures":        handleObject(),
 		"ssh":             handleArray(),

testdata/input-parent.hujson

@@ -63,4 +63,8 @@
 		"tag:dave": [],
 		"tag:jane": [],
 	},
+
+	"ipsets": {
+		"ipset:parent": ["192.0.2.0"],
+	},
 }