Add neutron job with ryu master

ryu is often released(basically every month). And the new release
may affect the behavior of ovs agent. This adds job to check neutron
with the ryu master to avoid a trouble with the new ryu release.

It is added as an experimental job firstly and if it is stable
we make it a periodic job.

Change-Id: I82f404a04a1082140208546fad28ca369d210d5a

jenkins/jobs/neutron.yaml

@@ -651,3 +651,47 @@
     publishers:
       - devstack-logs
       - console-log
+
+- job-template:
+    name: '{pipeline}-tempest-dsvm-neutron-with-ryu-master-{node}{suffix}'
+    node: '{node}'
+
+    wrappers:
+      - build-timeout:
+          timeout: 180
+      - timestamps
+
+    builders:
+      - print-template-name:
+          template-name: "{template-name}"
+      - link-logs
+      - net-info
+      - devstack-checkout
+      - shell: |
+          #!/bin/bash -xe
+          export PYTHONUNBUFFERED=true
+          export DEVSTACK_GATE_TEMPEST=1
+          export DEVSTACK_GATE_TEMPEST_FULL=1
+          export DEVSTACK_GATE_NEUTRON=1
+          export DEVSTACK_GATE_TLSPROXY=1
+          export BRANCH_OVERRIDE={branch-override}
+          if [ "$BRANCH_OVERRIDE" != "default" ] ; then
+              export OVERRIDE_ZUUL_BRANCH=$BRANCH_OVERRIDE
+          fi
+
+          function gate_hook {{
+              local ryu_path=$BASE/new/ryu_master
+              if [ ! -d $ryu_path ]; then
+                  git clone https://github.com/osrg/ryu $ryu_path
+              fi
+              sudo pip install -e $ryu_path
+              $BASE/new/devstack-gate/devstack-vm-gate.sh
+          }}
+          export -f gate_hook
+
+          cp devstack-gate/devstack-vm-gate-wrap.sh ./safe-devstack-vm-gate-wrap.sh
+          ./safe-devstack-vm-gate-wrap.sh
+
+    publishers:
+      - devstack-logs
+      - console-log

jenkins/jobs/projects.yaml

@@ -8098,6 +8098,11 @@
           node: ubuntu-xenial
           suffix: ''
           branch-override: master
+      - '{pipeline}-tempest-dsvm-neutron-with-ryu-master-{node}{suffix}':
+          pipeline: gate
+          node: ubuntu-xenial
+          suffix: '-nv'
+          branch-override: default
       - periodic-python-jobs-with-oslo-master
       - periodic-python-jobs-with-neutron-lib-master
 

zuul/layout.yaml

@@ -13071,6 +13071,7 @@ projects:
       - gate-tempest-dsvm-neutron-ovsfw-ubuntu-xenial-nv
       - gate-tempest-dsvm-neutron-full-centos-7-nv
       - gate-tempest-dsvm-neutron-dvr-multinode-full-ubuntu-xenial-nv
+      - gate-tempest-dsvm-neutron-with-ryu-master-ubuntu-xenial-nv
     experimental-tripleo:
       - gate-tripleo-ci-centos-7-ovb-ha
     periodic: