vagrant.dev: scripts for the vagrant user are not synchronized with the host

What is the current bug behavior?

Scripts useful for the vagrant user are not synchronized with the host.

/home/vagrant/00_bin/30_database_reload.sh
(...)
/home/vagrant/00_bin/50_TU_launch.unit.tests.sh
/home/vagrant/00_bin/60_TF_launch.functional.tests.sh

What is the expected correct behavior?

Scripts useful for the vagrant user are synchronized with the host.

Possible fixes

Share useful scripts via synching a directory with the VM instead of making a copy of the directory when building the VM.