Fix config tree corruption when setting non-string values
Fix config tree corruption when setting non-string values

Resolves: LE-10013
Change-Id: Ie83af62a8474aa322a567ae4599f6838465109eb

legatoproject/legato-af,legatoproject/legato-af,legatoproject/legato-af,legatoproject/legato-af,legatoproject/legato-af,legatoproject/legato-af,legatoproject/legato-af,legatoproject/legato-af,legatoproject/legato-af