Fix ansible & shell errors

Oh the joy of multi-step implement-run-debug situations like this...

Change-Id: Icf63ca02469f2ceb377b4ceb42bdc3004325dbd7
diff --git a/zuul.yaml b/zuul.yaml
index 674d501..61e080f 100644
--- a/zuul.yaml
+++ b/zuul.yaml
@@ -13,4 +13,4 @@
       Retrieve all artifacts built by the last matching run in the check
       pipeline, and promote them into a permanent location in the log server.
       This is intended to be run within a promote pipeline.
-    run: playbooks/retrieve-artifacts-from-check/run.yaml
+    run: playbooks/download-artifacts-from-check/run.yaml