[management] use permission modules (#3622)

management/server/permissions/modules/module.go

@@ -0,0 +1,19 @@
+package modules
+
+type Module string
+
+const (
+	Networks    Module = "networks"
+	Peers       Module = "peers"
+	Groups      Module = "groups"
+	Settings    Module = "settings"
+	Accounts    Module = "accounts"
+	Dns         Module = "dns"
+	Nameservers Module = "nameservers"
+	Events      Module = "events"
+	Policies    Module = "policies"
+	Routes      Module = "routes"
+	Users       Module = "users"
+	SetupKeys   Module = "setup_keys"
+	Pats        Module = "pats"
+)