Add experimental job to test xstatic packaging

We need a way to test if a particular change
(I14e0b5986d3433afd796ea44e66dfafd5003e732) will allow wheels to be
built with setuptools_scm.

This job is a temporary clone of {name}-tarball to put the build
artifacts on the log server so we can check if it works rather
than trigging a real build (and hence upload to pypi).

This should be removed after builds with the above change are working.

Change-Id: Idb36459bcdfd85d7765e849dfda105437bb8bd0c

jenkins/jobs/xstatic.yaml

@@ -17,3 +17,24 @@
 
     publishers:
       - console-log
+
+- job:
+    name: 'xstatic-angular-bootstrap-tarball-experimental'
+    node: ubuntu-trusty
+
+    builders:
+      - print-template-name:
+          template-name: "{template-name}"
+      - revoke-sudo
+      - gerrit-git-prep
+      - tarball:
+          env: venv
+
+    publishers:
+      - scp:
+          site: 'static.openstack.org'
+          files:
+            - target: 'logs/$LOG_PATH/tarballs/'
+              source: 'dist/*'
+      - console-log
+      - zuul-swift-upload-console-log

zuul/layout.yaml

@@ -11065,7 +11065,8 @@ projects:
       - name: noop-jobs
       - name: publish-to-pypi
     experimental:
-      - xstatic-check-version
+      - xstatic-check-version:
+        - xstatic-angular-bootstrap-tarball-experimental
 
   - name: openstack/xstatic-angular-cookies
     template: