Integrate meta-guf-distro/fng-install-add-sync-message

Commit: https://gitlab.com/garz-fricke/yocto/layers/meta-guf-distro/-/commit/c0806fd5e95416aaba00064351c96a6d62c67a09

fng-install: Add message when the partitioning is done as sync for production tests

The kernel message 'rereading partition table' us used in FT2 to sync the parallel start of tests during the installation. This message is not send in all cases anymore, so we explicitly print it out in the correct moment.

BCS 746-000529