build/packages: add systemd support
build/packages: add systemd support

RHEL7 & CentOS7 bring systemd by default.
Some services now use it.
This patch aims to add systemd support to install_packages_disabled
function, which the goal to replace sysctemctl by a custom script during
the installation process.
Signed-off-by: Emilien Macchi <d605a501dec15c980af71d9dfebf4b595ab6da1f@enovance.com>

lebauce/edeploy,redhat-cip/edeploy,lebauce/edeploy,enovance/edeploy,redhat-cip/edeploy,lebauce/edeploy,redhat-cip/edeploy,enovance/edeploy,redhat-cip/edeploy,enovance/edeploy,enovance/edeploy,lebauce/edeploy