[deps](librdkafka) set --enable-sasl option in rdkafka build to enable plain password auth at routine load (#7251)
```
create routine load rd_001
on tb1
with append
COLUMNS(user_id, date)
properties (
"desired_concurrent_number" = "3",
"max_batch_interval" = "5",
"max_batch_rows" = "300000",
"max_batch_size" = "209715200",
"max_error_number" = "100",
"format" = "json"
)
from KAFKA (
"kafka_broker_list" = "127.0.0.1:9092",
"kafka_topic" = "topic1",
"property.security.protocol" = "sasl_plaintext",
"property.sasl.mechanism" = "PLAIN",
"property.sasl.username" = "your-username",
"property.sasl.password" = "your-password",
"property.group.id" ="group1",
"property.client.id" = "client-1",
"property.kafka_default_offsets" = "OFFSET_BEGINNING"
);
```
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