fix: remove non-existed namespaces and separate bases (#541)

Signed-off-by: bitliu <bitliu@tencent.com>

test/e2e/conformance/base/nacos.yaml

@@ -0,0 +1,49 @@
+# Copyright (c) 2022 Alibaba Group Holding Ltd.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# This file contains the base resources that most conformance tests will rely
+# on. This includes 3 namespaces along with Gateways, Services and Deployments
+# that can be used as backends for routing traffic. The most important
+# resources included are the Gateways (all in the higress-conformance-infra
+# namespace):
+# - same-namespace (only supports route in same ns)
+# - all-namespaces (supports routes in all ns)
+# - backend-namespaces (supports routes in ns with backend label)
+
+apiVersion: v1
+kind: Pod
+metadata:
+  name: nacos-standlone-rc3
+  namespace: higress-conformance-app-backend
+  labels:
+    name: nacos-standlone-rc3
+spec:
+  containers:
+  - name: nacos-standlone-rc3
+    image: registry.cn-hangzhou.aliyuncs.com/hinsteny/nacos-standlone-rc3:1.0.0-RC3 
+    ports:
+    - containerPort: 8848
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: nacos-standlone-rc3-service
+  namespace: higress-conformance-app-backend
+spec:
+  selector:
+    name: nacos-standlone-rc3
+  clusterIP: None
+  ports:
+  - name: foo # name is not required for single-port Services
+    port: 8848