Fix ansible & shell errors

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

Change-Id: Icf63ca02469f2ceb377b4ceb42bdc3004325dbd7
diff --git a/roles/fetch-artifacts-for-publish/defaults/main.yaml b/roles/fetch-artifacts-for-publish/defaults/main.yaml
new file mode 100644
index 0000000..3e6da11
--- /dev/null
+++ b/roles/fetch-artifacts-for-publish/defaults/main.yaml
@@ -0,0 +1 @@
+zuul_output_dir: "{{ ansible_user_dir }}/zuul-output"