install_packages() asks if no dpkg or no sudoer.
install_packages() asks if no dpkg or no sudoer.

If dpkg is missing no deb packages can be installed.  Also,
if the user is not a sudoer it is not possible to install
deb packages.  In this case the user becomes some feedback
and must decide to go on with the currently executed task.

theno/fabsetup,theno/fabsetup