minor change to disable multipath via kernel arguments when no extern…

…al storage config is present. This ensures initrd does not load it before switching rootfs and avoids unwanted side effect of /dev/mapper devices for disks being created

(cherry picked from commit 21679ef)

pkg/console/util.go

@@ -50,6 +50,7 @@ You can see the full installation log by:
 
 	ElementalConfigDir  = "/tmp/elemental"
 	ElementalConfigFile = "config.yaml"
+	multipathOff        = "multipath=off"
 )
 
 func newProxyClient() http.Client {
@@ -504,6 +505,9 @@ func doInstall(g *gocui.Gui, hvstConfig *config.HarvesterConfig, webhooks Render
 		env = append(env, fmt.Sprintf("HARVESTER_DATA_DISK=%s", hvstConfig.DataDisk))
 	}
 
+	if !hvstConfig.OS.ExternalStorage.Enabled {
+		env = append(env, fmt.Sprintf("HARVESTER_ADDITIONAL_KERNEL_ARGUMENTS=%s", multipathOff))
+	}
 	if hvstConfig.OS.AdditionalKernelArguments != "" {
 		env = append(env, fmt.Sprintf("HARVESTER_ADDITIONAL_KERNEL_ARGUMENTS=%s", hvstConfig.OS.AdditionalKernelArguments))
 	}