Reduce etcd resource for ci (#19505)

Signed-off-by: NJenny Li <jing.li@zilliz.com>
Signed-off-by: NJenny Li <jing.li@zilliz.com>

tests/scripts/values/ci/pr.yaml

@@ -150,6 +150,7 @@ pulsar:
         cpu: "0.3"
         memory: "1Gi"
 etcd:
+  replicaCount: 1
   resources:
     requests:
       cpu: "0.1"