Use bigger flavor for StorPool node

Change-Id: Ic43071c0726e2b8d5f7eed3192915782ccbec4de
diff --git a/zuul.d/sp-cinder.yaml b/zuul.d/sp-cinder.yaml
index 3062fe9..5f24ccd 100644
--- a/zuul.d/sp-cinder.yaml
+++ b/zuul.d/sp-cinder.yaml
@@ -20,7 +20,7 @@
       - name: undercloud-client
         label: os-ubuntu2204-small
       - name: lab-sp-a1
-        label: os-ubuntu2204-large
+        label: os-ubuntu2204-2xlarge
     groups:
       - name: tempest
         nodes: