Add openstack-two-node-centos-8-stream

This will allow multinode FIPS testing

Change-Id: I82b3b8fe56275aed72e13f6d1bd9170c50e5da0d

.zuul.yaml

@@ -146,6 +146,36 @@
         nodes:
           - compute1
 
+- nodeset:
+    name: openstack-two-node-centos-8-stream
+    nodes:
+      - name: controller
+        label: centos-8-stream
+      - name: compute1
+        label: centos-8-stream
+    groups:
+      # Node where tests are executed and test results collected
+      - name: tempest
+        nodes:
+          - controller
+      # Nodes running the compute service
+      - name: compute
+        nodes:
+          - controller
+          - compute1
+      # 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
+
 - nodeset:
     name: openstack-two-node-focal
     nodes: