Use nested-virt nodeset for c9 scenario010

This review adds a c9 nodeset that uses the
nested-virt-centos-9-stream label.
The nest-virt nodeset is required for scenario010
test to run octavia tests.

Change-Id: Ifc2212a0541b848cb8447611f3f338e8ccd9c7bf
Related-Bug: #1958384

zuul.d/nodesets.yaml

@@ -89,6 +89,18 @@
       - name: peers
         nodes: []
 
+- nodeset:
+    name: single-centos-9-node-nested-virt
+    nodes:
+      - name: primary
+        label: nested-virt-centos-9-stream
+    groups:
+      - name: switch
+        nodes:
+          - primary
+      - name: peers
+        nodes: []
+
 - nodeset:
     name: single-centos-7-node
     nodes:

zuul.d/standalone-jobs.yaml

@@ -809,7 +809,7 @@
     name: tripleo-ci-centos-9-scenario010-standalone
     parent: tripleo-ci-centos-8-scenario010-standalone
     branches: ^(?!stable/(train|ussuri|victoria|wallaby)).*$
-    nodeset: single-centos-9-node
+    nodeset: single-centos-9-node-nested-virt
     files: *scen10_files
 
 - job: