xDS router performance optimization #169

Job	Run time
set-execution-conditions	11s
download midwares and cache	14s
build agent and cache	1m 12s
Test for agentcore dynamic config (127.0.0.1:8848, NACOS)	1m 17s
Test for xds service discovery with only sermant	3m 50s
Test for agentcore dynamic config (127.0.0.1:2181, ZOOKEEPER)	55s
Test for xds service discovery with spring-client using enovy	3m 15s
Test for xds router and lb with router plugin (2.0.2.RELEASE, 1.19, Finchley.RELEASE, 4.4, 2.2.0,...	6m 38s
Test for xds router and lb with router plugin (2.1.0.RELEASE, 1.23, Greenwich.RELEASE, 4.4.1, 2.3...	5m 40s
Test for xds service discovery with spring-server using envoy	3m 44s
Test for xds router and lb with router plugin (2.2.0.RELEASE, 1.25, Hoxton.RELEASE, 4.5, 2.4.0, 3...	5m 19s
Test for xds router and lb with router plugin (2.3.0.RELEASE, 1.26, Hoxton.RELEASE, 4.5.3, 2.5.0,...	6m 17s
Test for xds router and lb with router plugin (2.4.0, 1.27, 2020.0.0, 4.5.7, 2.6.0, 4.2.2, 4.1.2)	5m 33s
Test for xds router and lb with router plugin (2.6.2, 1.29, 2021.0.0, 4.5.10, 2.7.3, 4.7.2, 4.1.3)	5m 45s
Test for xds router and lb with router plugin (2.7.17, 1.30, 2021.0.3, 4.5.13, 2.7.5, 4.12.0, 4.1.5)	6m 12s
	56m 2s

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