Initialize isPreBuilt in constructor to default value.
Initialize isPreBuilt in constructor to default value.

Resolves: LE-6958
Change-Id: If1226c502384f6b4a83047b6411c3a7eafc44770

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