Remove Nova from controller node.

Change-Id: I2df5ab7a1421892afa1e8a6cd7c3aff081a24b5a

zuul.d/nodes.yaml

@@ -0,0 +1,32 @@
+- nodeset:
+    name: tobiko-multinode
+    nodes:
+      - name: controller
+        label: ubuntu-bionic
+      - name: compute1
+        label: ubuntu-bionic
+      - name: compute2
+        label: ubuntu-bionic
+    groups:
+      # Node where tests are executed and test results collected
+      - name: tempest
+        nodes:
+          - controller
+      # Nodes running the compute service
+      - name: compute
+        nodes:
+          # - controller
+          - compute1
+          - compute2
+      # Nodes that are not the controller
+      - name: subnode
+        nodes:
+          - compute1
+      # Switch node for multinode networking setup
+      - name: switch
+        nodes:
+          - controller
+      # Peer nodes for multinode networking setup
+      - name: peers
+        nodes:
+          - compute1

zuul.d/tobiko-devstack.yaml

@@ -62,7 +62,7 @@
 - job:
     name: tobiko-devstack-multinode
     parent: tobiko-devstack
-    nodeset: openstack-two-node-bionic
+    nodeset: tobiko-multinode
     abstract: true
     description: |
       Base Tobiko devstack job with multinode.