add 2021-05-01-preview/ServerConnectionPolicies.json to V5 SDK tag (#16716)
add 2021-05-01-preview/ServerConnectionPolicies.json to V5 SDK tag (#16716)


naveedaz/azure-rest-api-specs,johanste/azure-rest-api-specs,solankisamir/azure-rest-api-specs,naveedaz/azure-rest-api-specs,AppPlatPerf/azure-rest-api-specs,AppPlatPerf/azure-rest-api-specs,johanste/azure-rest-api-specs,solankisamir/azure-rest-api-specs