[backup] BackupServiceClient explict no_proxy()
[backup] BackupServiceClient explict no_proxy()

Closes: #4138
Approved by: wqfish

aptos-labs/aptos-core,libra/libra,aptos-labs/aptos-core,aptos-labs/aptos-core,aptos-labs/aptos-core,libra/libra,libra/libra,libra/libra,libra/libra,aptos-labs/aptos-core,aptos-labs/aptos-core,aptos-labs/aptos-core