Etcd pkg Insecure ciphers are allowed by default

Summary

### Vulnerability type Cryptography ### Detail The TLS ciphers list supported by etcd contains insecure cipher suites. Users can configure the desired ciphers using the “--cipher-suites” flag, and a default list of secure cipher suites is used if empty. ### Workarounds By default, no action is required. If users want to specify cipher suites using the '--cipher-suites' flag, they should try not to specify insecure cipher suites. Please refer to the [security documentation](https://etcd.io/docs/v3.4/op-guide/security/). ### References Find out more on this vulnerability in the [security audit report](https://github.com/etcd-io/etcd/blob/main/security/SECURITY_AUDIT.pdf) ### For more information If you have any questions or comments about this advisory: * Contact the [etcd security committee](https://github.com/etcd-io/etcd/blob/main/security/security-release-process.md#product-security-committee-psc)