Hook up to CoreOS CI

This is the first repo that we hook up to the new CoreOS CI interface.
And it's sorely needed too, since patches here can easily result in
broken boots.

.cci.jenkinsfile

@@ -0,0 +1,6 @@
+// Documentation: https://github.com/coreos/coreos-ci/blob/master/README-upstream-ci.md
+
+cosaPod {
+    checkout scm
+    fcosBuild(make: true)
+}