Use product vndk version for product apps

ro.vndk.version is only for vendor modules. Product modules use
different vndk version that is set in ro.product.vndk.version.
Use product vndk version for creating namespaces for product apps.

Bug: 148823287
Test: atest libnativeloader_test
Change-Id: Iade4b3ca846f1e47e5138f2ceda81bf188276a91
4 files changed