Add missing property etag for 2020-04-01-preview version.#14434

zhenglaizhang merged 1 commit intoAzure:masterAzure/azure-rest-api-specs:masterfrom

jiacheng-L:dev-keyvault-Microsoft.KeyVault-2020-04-01-preview-bugFixjiacheng-L/azure-rest-api-specs:dev-keyvault-Microsoft.KeyVault-2020-04-01-preview-bugFixCopy head branch name to clipboard