fix: remove extra slash when constructing member cluster URL to adapt…

… the apiEndpoint of the cluster object ends with a slash.

Signed-off-by: 圣朋 <sp441185@alibaba-inc.com>

pkg/registry/cluster/storage/aggregate_test.go

@@ -58,7 +58,8 @@ func TestRequestURL(t *testing.T) {
 	}
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
-			proxyRequestInfo := lifted.NewRequestInfo(&tt.request)
+			request := tt.request
+			proxyRequestInfo := lifted.NewRequestInfo(&request)
 			location, _ := url.Parse(tt.urlString)
 			requestURL := requestURLStr(location, proxyRequestInfo)
 			require.Equal(t, tt.want, requestURL)