updated WW_INTERNAL to 45 for 4.5.x release

Internal version update is necessary as new structures were added,
most obviously the disk, partitions and file system structures.
Old configurations will work as expected.

Signed-off-by: Christian Goll <cgoll@suse.com>

internal/pkg/node/node_test.go

@@ -9,7 +9,7 @@ import (
 
 func TestNodeUpdate(t *testing.T) {
 	var nodeConfig = `
-WW_INTERNAL: 43
+WW_INTERNAL: 45
 nodeprofiles:
   default:
     comment: This profile is automatically included for each node
@@ -40,7 +40,7 @@ nodes:
 }
 
 func TestNodeDisk(t *testing.T) {
-	node_config := `WW_INTERNAL: 43
+	node_config := `WW_INTERNAL: 45
 nodes:
   n1:
     disks: