Improve Kafka DNS resolution on non static IP

It is common to have:

• broker with a dynamic IP -> we should not cache the DNS lookup
• broker name that resolves with multiple IPs -> in case of failure we should try the next IP

Confluent recommends the following configuration:

At java level:

java.security.Security.setProperty(“networkaddress.cache.ttl” , “30");
java.security.Security.setProperty(“networkaddress.cache.negative.ttl” , “0"); 

At Kafka consumer and producer level with:

consumer.client.dns.lookup="use_all_dns_ips"
producer.client.dns.lookup="use_all_dns_ips"

The java configuration will be global and it changes the dns cache from infinite to 30s which should be ok.