Enable Zuul v3 CI

I'm also proactively disabling the top-level parallel build again
because the code has not been merged upstream, and because there are
already some conflicts (see the ML thread for details).

Also update the internal projects (so that the shared depndencies are
used, and bring in netconf-cli.

(And try to fix a random rauc error, yay.)

Change-Id: I81f2f3195aa1dbe4527135861cd486eb559d65ed
See-also: http://lists.busybox.net/pipermail/buildroot/2019-February/243811.html
diff --git a/.zuul.yaml b/.zuul.yaml
new file mode 100644
index 0000000..5283b5e
--- /dev/null
+++ b/.zuul.yaml
@@ -0,0 +1,26 @@
+- job:
+    name: czechlight-clearfog
+    parent: run-ci-build-sh
+    timeout: 5400
+    vars:
+      prepare_git_submodules: true
+    required-projects: &projects
+      - github/buildroot/buildroot
+      - CzechLight/dependencies
+      - CzechLight/cla-sysrepo
+      - CzechLight/netconf-cli
+      - github/CESNET/libyang
+      - github/sysrepo/libredblack
+      - github/sysrepo/sysrepo
+      - github/CESNET/libnetconf2
+      - github/CESNET/Netopeer2
+      - github/philsquared/Catch
+      - github/docopt/docopt.cpp
+      - github/gabime/spdlog
+      - github/rollbear/trompeloeil
+      - github/AmokHuginnsson/replxx
+
+- project:
+    check:
+      jobs:
+        - czechlight-clearfog