Add shim to choose next entry to boot from (#230)

pkg/constants/constants.go

@@ -149,3 +149,14 @@ func GetGrubFonts() []string {
 func GetGrubModules() []string {
 	return []string{"loopback.mod", "squash4.mod", "xzio.mod", "gzio.mod", "regexp.mod"}
 }
+
+func GetConfigScanDirs() []string {
+	return []string{
+		"/oem",
+		"/system/oem",
+		"/usr/local/cloud-config",
+		"/run/initramfs/live",
+		"/etc/kairos",    // Default system configuration file https://github.com/kairos-io/kairos/issues/2221
+		"/etc/elemental", // for backwards compatibility
+	}
+}