[debian] fix init script dependencies (closes #1921729)
Facility names starting with $ are reserved system facilities. Other
scripts can be referred to using the facility name listed in Provides
directly.
debian/tmp/usr/bin/cubicweb-ctl usr/bin/
debian/tmp/usr/lib/PY_VERSION/site-packages/cubicweb/cwctl.py usr/lib/PY_VERSION/site-packages/cubicweb
debian/cubicweb-ctl.bash_completion etc/bash_completion.d/cubicweb-ctl