Update gate-zuul-nodepool

This runs the integration tests using the tox macro.  It renames
the test script to a setup script since we no longer expect it to
actually run the tests.

It also collects and publishes the nodepool logs.

Change-Id: I12143ac0841e5fc646448eae4171594579fa0086

jenkins/jobs/infra.yaml

@@ -449,8 +449,17 @@
     builders:
       - zuul-clone:
           project: openstack-infra/zuul
-      - shell: openstack-infra/zuul/tools/nodepool-integration-test.sh
+      - shell: openstack-infra/zuul/tools/nodepool-integration-setup.sh
+      - run-tox:
+          envlist: 'nodepool'
 
     publishers:
       - test-results
+      - scp:
+          site: 'static.openstack.org'
+          files:
+            - target: 'logs/$LOG_PATH/nodepool'
+              source: '/tmp/nodepool/logs/**'
+              keep-hierarchy: true
+              copy-after-failure: true
       - console-log