Currently when adding an environment variable in provisioning we have
to check if the system is Ubuntu and use .profile instead of .bashrc.
This check should be done in a function so we don't have to duplicate
it for every provisioning script separately.
Change-Id: I2fa128032123e17d20dfb39cd3668e22e4bb0d55
Reviewed-by: Maurice Kalinowski <maurice.kalinowski@qt.io>
Reviewed-by: Heikki Halmet <heikki.halmet@qt.io>
