
For quite a while Debian is shipped with systemd-sysv by default. However, default value of DIB_DEBIAN_ALT_INIT_PACKAGE is not in sync across elements. We change a default now for the `debian` element along with removing `apt_get_bp_extra_opts` that is not defined or used anywhere else. Change-Id: If5d3f0a21467f926c23bb39a1853be73befa768e