Send swift upload instructions to workers

Have zuul send signed credentials as part of the job for workers to
consume and upload assets to a defined location.

Zuul currently doesn't care about logs however this change will
suggest a LOG_PATH to builders as a unqiue destination prefix
allowing zuul to know preemptively the destination.
The workers are still required to send a URL of the final location.

Change-Id: I042cdd2dd2407f381cafcabc5c6b83d9b9a9eb00
diff --git a/tests/fixtures/layout-swift.yaml b/tests/fixtures/layout-swift.yaml
new file mode 100644
index 0000000..acaaad8
--- /dev/null
+++ b/tests/fixtures/layout-swift.yaml
@@ -0,0 +1,59 @@
+pipelines:
+  - name: check
+    manager: IndependentPipelineManager
+    trigger:
+      gerrit:
+        - event: patchset-created
+    success:
+      gerrit:
+        verified: 1
+    failure:
+      gerrit:
+        verified: -1
+
+  - name: post
+    manager: IndependentPipelineManager
+    trigger:
+      gerrit:
+        - event: ref-updated
+          ref: ^(?!refs/).*$
+
+  - name: gate
+    manager: DependentPipelineManager
+    failure-message: Build failed.  For information on how to proceed, see http://wiki.example.org/Test_Failures
+    trigger:
+      gerrit:
+        - event: comment-added
+          approval:
+            - approved: 1
+    success:
+      gerrit:
+        verified: 2
+        submit: true
+    failure:
+      gerrit:
+        verified: -2
+    start:
+      gerrit:
+        verified: 0
+    precedence: high
+
+jobs:
+  - name: ^.*$
+    swift:
+      - name: logs
+  - name: ^.*-merge$
+    swift:
+      - name: logs
+        container: merge_logs
+    failure-message: Unable to merge change
+  - name: test-test
+    swift:
+      - name: MOSTLY
+        container: stash
+
+projects:
+  - name: org/project
+    gate:
+      - test-merge
+      - test-test