Add integration test for zuul_stream

Actually run a playbook against a second node with the plugins enabled,
then fetch the output so we can look at it.

Takes advantage of the fact that zuul_console will already be running on
the second node.

Change-Id: I75bcbc46ffbbb49f0689584fbdb1c62ac2e91737
diff --git a/playbooks/zuul-stream/fixtures/test-stream.yaml b/playbooks/zuul-stream/fixtures/test-stream.yaml
new file mode 100644
index 0000000..065e332
--- /dev/null
+++ b/playbooks/zuul-stream/fixtures/test-stream.yaml
@@ -0,0 +1,21 @@
+- name: Run some commands to show that logging works
+  hosts: node
+  tasks:
+
+    - name: Run setup
+      setup:
+      register: setupvar
+
+    - name: Output debug for a var
+      debug:
+        var: setupvar
+
+    - name: Run a shell task
+      command: ip addr show
+
+    - name: Loop with items
+      command: "echo {{ item }}"
+      with_items:
+        - item1
+        - item2
+        - item3