build debs on OBS+gitlab

Signed-off-by: Lokesh Mandvekar <lsm5@fedoraproject.org>

# Please enter the commit message for your changes. Lines starting
# with '#' will be ignored, and an empty message aborts the commit.
#
# Date:      Tue Jan 21 20:53:47 2020 +0530
#
# On branch debian-stable
# Your branch and 'rhcontainerbot/debian-stable' have diverged,
# and have 1 and 3 different commits each, respectively.
#   (use "git pull" to merge the remote branch into yours)
#
# Changes to be committed:
#	new file:   debian/changelog
#	new file:   debian/compat
#	new file:   debian/containers-image.displace
#	new file:   debian/control
#	new file:   debian/copyright
#	new file:   debian/rules
#
# Untracked files:
#	debian/.debhelper/
#	debian/containers-image.debhelper.log
#	debian/containers-image.substvars
#	debian/containers-image/
#	debian/files
#	debian/tmp/
#	docs/containers-certs.d.5
#	docs/containers-policy.json.5
#	docs/containers-registries.conf.5
#	docs/containers-registries.d.5
#	docs/containers-signature.5
#	docs/containers-transports.5
#	obj-x86_64-linux-gnu/
#
