enable nova v20 compat testing jobs

Create 2 Nova v2.0 compatibility jobs. These will test, on Nova only,
that v2.0 on v2.1 and v2.0 on legacy v2.0 code pass all the Tempest
API tests.

Depends-On: Ie6b7e4290d9a1d9789d04099b3b31c9a557bc22b

devstack changes

and

Depends-On: I94b1305882598cc259a267dc8e954ab242baf7d1

which are Nova changes that setup the pipelines the way we expect

Change-Id: I86a627b8ec7b1246452a16c10dcfb1ad5f83bdef

jenkins/jobs/devstack-gate.yaml

@@ -549,6 +549,74 @@
       - devstack-logs
       - console-log
 
+- job-template:
+    name: '{pipeline}-tempest-dsvm-nova-v20-api{branch-designator}'
+    node: '{node}'
+
+    wrappers:
+      - build-timeout:
+          timeout: 125
+      - timestamps
+
+    builders:
+      - link-logs
+      - net-info
+      - devstack-checkout
+      - shell: |
+          #!/bin/bash -xe
+          export PYTHONUNBUFFERED=true
+          export DEVSTACK_GATE_TIMEOUT=120
+          export DEVSTACK_GATE_TEMPEST=1
+          export DEVSTACK_LOCAL_CONFIG="TEMPEST_COMPUTE_TYPE=compute_legacy"
+          # only run compute API tests
+          export DEVSTACK_GATE_TEMPEST_REGEX="api.*compute"
+
+          export BRANCH_OVERRIDE={branch-override}
+          if [ "$BRANCH_OVERRIDE" != "default" ] ; then
+              export OVERRIDE_ZUUL_BRANCH=$BRANCH_OVERRIDE
+          fi
+          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
+
+- job-template:
+    name: '{pipeline}-tempest-dsvm-nova-v20-api-legacy{branch-designator}'
+    node: '{node}'
+
+    wrappers:
+      - build-timeout:
+          timeout: 125
+      - timestamps
+
+    builders:
+      - link-logs
+      - net-info
+      - devstack-checkout
+      - shell: |
+          #!/bin/bash -xe
+          export PYTHONUNBUFFERED=true
+          export DEVSTACK_GATE_TIMEOUT=120
+          export DEVSTACK_GATE_TEMPEST=1
+          # 2 line vars are so much fun
+          export DEVSTACK_LOCAL_CONFIG="TEMPEST_COMPUTE_TYPE=compute_legacy"
+          export DEVSTACK_LOCAL_CONFIG+=$'\n'"NOVA_V2_LEGACY=True"
+          # only run compute API tests
+          export DEVSTACK_GATE_TEMPEST_REGEX="api.*compute"
+
+          export BRANCH_OVERRIDE={branch-override}
+          if [ "$BRANCH_OVERRIDE" != "default" ] ; then
+              export OVERRIDE_ZUUL_BRANCH=$BRANCH_OVERRIDE
+          fi
+          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
+
 # dsvm-updown builds up an devstack and shuts it down, this ensures
 # that things like unstack.sh and clean.sh work correctly. This should
 # only be run on the devstack tree.
@@ -2390,6 +2458,8 @@
       - '{pipeline}-tempest-dsvm-full-lio{branch-designator}'
       - '{pipeline}-tempest-dsvm-nova-v21-full{branch-designator}'
       - '{pipeline}-tempest-dsvm-nova-v21-neutron-full{branch-designator}'
+      - '{pipeline}-tempest-dsvm-nova-v20-api{branch-designator}'
+      - '{pipeline}-tempest-dsvm-nova-v20-api-legacy{branch-designator}'
       - '{pipeline}-tempest-dsvm-nova-wsgi-full{branch-designator}'
       - '{pipeline}-tempest-dsvm-trove{branch-designator}'
       - '{pipeline}-grenade-dsvm-trove{branch-designator}'

zuul/layout.yaml

@@ -1509,6 +1509,10 @@ jobs:
   - name: ^gate-tempest-dsvm-nova-v21-full$
     branch: ^(?!stable/juno).*$
 
+  - name: ^gate-tempest-dsvm-nova-v20
+    branch: ^(?!stable/(juno|kilo)).*$
+    voting: false
+
   - name: ^gate-tempest-dsvm-nova-v21-neutron-full$
     branch: ^(?!stable/juno).*$
     voting: false
@@ -2735,6 +2739,8 @@ projects:
       - gate-grenade-dsvm-partial-ncpu
       - gate-grenade-dsvm-ironic-sideways
       - gate-tempest-dsvm-ironic-pxe_ipa-nv
+      - gate-tempest-dsvm-nova-v20-api
+      - gate-tempest-dsvm-nova-v20-api-legacy
       - gate-tempest-dsvm-nova-v21-full
       - gate-tempest-dsvm-nova-v21-neutron-full
       - gate-tempest-dsvm-cells