Add Debian 11 (Bullseye) to CI. (#11334)

* Add Debian 11 (Bullseye) to CI.

Official feature freeze is in a couple of days, and the release is soon
to follow.

* Fix handling of Debian 11 package builds.

* Fix build dependencies for Debian 11.

`dh-systemd` has long since been deprecated, we should instead be
depending on the minimum version of `debhelper` that includes the
required code. We need to special-case Ubuntu 16.04 because it predates
the merge of `dh-systemd` into `debhelper`.

* Use correct Docker image for Debian 11.

* Add repoconfig package build for Debian 11.

* Simplify handling of package building and testing.

This should fix the CI issues we’re seeing with package builds, or at
least make them easier to diagnose.

2 files changed, 63 insertions, 2 deletions

diff --git a/contrib/debian/control b/contrib/debian/control
index 2659c389df..622e730f2a 100644
--- a/contrib/debian/control
+++ b/contrib/debian/control
@@ -1,7 +1,6 @@
 Source: netdata
-Build-Depends: debhelper (>= 9),
+Build-Depends: debhelper (>= 9.20160709),
                dh-autoreconf,
-               dh-systemd (>= 1.5),
                dpkg-dev (>= 1.13.19),
                zlib1g-dev,
                uuid-dev,
diff --git a/contrib/debian/control.xenial b/contrib/debian/control.xenial
new file mode 100644
index 0000000000..2659c389df
--- /dev/null
+++ b/contrib/debian/control.xenial
@@ -0,0 +1,62 @@
+Source: netdata
+Build-Depends: debhelper (>= 9),
+               dh-autoreconf,
+               dh-systemd (>= 1.5),
+               dpkg-dev (>= 1.13.19),
+               zlib1g-dev,
+               uuid-dev,
+               libelf-dev,
+               libuv1-dev,
+               liblz4-dev,
+               libjudy-dev,
+               libssl-dev,
+               libmnl-dev,
+               libjson-c-dev,
+               libcups2-dev,
+               libipmimonitoring-dev,
+               libnetfilter-acct-dev,
+               libsnappy-dev,
+               libprotobuf-dev,
+               libprotoc-dev,
+               cmake,
+               autogen,
+               autoconf,
+               automake,
+               pkg-config,
+               curl,
+               protobuf-compiler
+Section: net
+Priority: optional
+Maintainer: Netdata Builder <bot@netdata.cloud>
+Standards-Version: 3.9.6
+Homepage: https://netdata.cloud
+
+Package: netdata
+Architecture: any
+Depends: adduser,
+         libcap2-bin (>= 1:2.0),
+         lsb-base (>= 3.1-23.2),
+         openssl,
+         ${misc:Depends},
+         ${shlibs:Depends}
+Pre-Depends: dpkg (>= 1.17.14)
+Description: real-time charts for system monitoring
+ Netdata is a daemon that collects data in realtime (per second)
+ and presents a web site to view and analyze them. The presentation
+ is also real-time and full of interactive charts that precisely
+ render all collected values.
+
+Package: netdata-plugin-cups
+Architecture: any
+Depends: cups,
+         netdata (>= ${source:Version})
+Description: The Common Unix Printing System plugin for metrics collection from cupsd
+
+Package: netdata-plugin-freeipmi
+Architecture: any
+Depends: freeipmi,
+         netdata (= ${source:Version})
+Description: FreeIPMI - The Intelligent Platform Management System.
+ The IPMI specification defines a set of interfaces for platform management.
+ It is implemented by a number vendors for system management. The features of IPMI that most users will be interested in
+ are sensor monitoring, system event monitoring, power control, and serial-over-LAN (SOL).