Remove zookeeper dependency

[chromy96]

Xinfra monitor has recently been upgraded to version 2.8 of kafka client libraries, where adminClient does not use zookeeper dependency anymore.

This gives a great opportunity to remove all zookeeper reference/dependency from xinfra monitor.

PR is available here: #386

[chromy96]

@mhratson I hope you have time for a review

[mhratson]

@chromy96 thanks for the #386.
I'll take a look ASAP…

[sanaasy]

@mhratson 👋 Given that Kafka has released KRaft mode in general availability with Kafka v3.6 removing the need for zookeeper, will this issue and PR be merged soon?