Add test cases for http2rpc (#662)

test/e2e/conformance/tests/httproute-http2rpc-2-delete.yaml

@@ -0,0 +1,34 @@
+# 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.
+
+apiVersion: networking.higress.io/v1
+kind: Http2Rpc
+metadata:
+  name: httproute-http2rpc-demo
+  namespace: higress-system
+spec:
+  dubbo: 
+    service: com.dubbo.demo.api.DemoService
+    version: 1.0.0
+    group: dev
+    methods: 
+    - serviceMethod: sayHello
+      headersAttach: "*"
+      httpMethods: 
+      - GET
+      httpPath: "/dubbo/hello_update"
+      params:
+      - paramKey: name
+        paramSource: QUERY
+        paramType: "java.lang.String"