[FLINK-17582][quickstarts] Update quickstarts to use universal Kafka connector

[sjwiesman]

What is the purpose of the change

Kafka 0.10 is very out of date, this updates the quickstarts to use the universal connector.

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Last check on commit 2cbfa3f (Fri Oct 16 10:33:44 UTC 2020)

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[StephanEwen]

Good catch! Definitely +1 to this.

Merging...