test(stand): bump sanity placementCount to 2

placementCount=1 forces autoplace onto a single node, and linstor-csi
treats the resulting "publish-node already has the disk" topology as
a conflict to resolve by deletion. Two replicas give the reconciler
the diskful pair it expects, leaving the publish path with an
unambiguous diskless attach.

Co-Authored-By: Claude <noreply@anthropic.com>
Signed-off-by: Andrei Kvapil <kvapss@gmail.com>

Author: kvaps

stand/csi-sanity-job.yaml

@@ -77,4 +77,8 @@ metadata:
 data:
   sc-params.yaml: |
     storagePool: stand
-    placementCount: "1"
+    # 2 replicas so autoplace lands diskful on two of three workers;
+    # linstor-csi's reconciler then treats the publishing node's
+    # missing replica as a diskless attach instead of "no volume here"
+    # and ControllerPublishVolume succeeds without churn.
+    placementCount: "2"