Document zuul_url breaking change
The change to add zuul_url breaks backwards compatibility, so
document it in NEWS.
Change-Id: Iac4e6540f5383a570961b157b15ad4707c520414
diff --git a/NEWS.rst b/NEWS.rst
index c4901a8..bbaa2a2 100644
--- a/NEWS.rst
+++ b/NEWS.rst
@@ -36,3 +36,9 @@
reporters. This requires restructuring the start/success/failure
actions to include a dictionary of reporters and their parameters.
See reporters in the docs and layout.yaml-sample.
+
+* The zuul_url configuration option is required in zuul.conf. It
+ specifies the URL of the git repositories that should be used by
+ workers when fetching Zuul refs and is passed to the workers as the
+ ZUUL_URL parameter. It should probably be set to
+ "http://zuul-host-name/p/".