Update Kafka versions

[ycombinator]

What does this PR do?

Updates the version of Kafka we use in our tests.

Why is it important?

The libbeat CI job has been failing the past few days with this error:

[2020-04-19T19:37:28.974Z] Step 9/15 : RUN mkdir -p ${KAFKA_LOGS_DIR} && mkdir -p ${KAFKA_HOME} && curl -s -o $INSTALL_DIR/kafka.tgz     "http://mirror.easyname.ch/apache/kafka/${KAFKA_VERSION}/kafka_2.11-${KAFKA_VERSION}.tgz" &&     tar xzf ${INSTALL_DIR}/kafka.tgz -C ${KAFKA_HOME} --strip-components 1

[2020-04-19T19:37:28.975Z]  ---> Running in 3dc3dbc4603f

[2020-04-19T19:37:29.914Z] 

[2020-04-19T19:37:29.915Z] gzip: stdin: not in gzip format

[2020-04-19T19:37:29.915Z] tar: Child returned status 1

[2020-04-19T19:37:29.915Z] tar: Error is not recoverable: exiting now

[2020-04-19T19:37:29.915Z] Removing intermediate container 3dc3dbc4603f

[2020-04-19T19:37:29.915Z] Service 'kafka' failed to build: The command '/bin/sh -c mkdir -p ${KAFKA_LOGS_DIR} && mkdir -p ${KAFKA_HOME} && curl -s -o $INSTALL_DIR/kafka.tgz     "http://mirror.easyname.ch/apache/kafka/${KAFKA_VERSION}/kafka_2.11-${KAFKA_VERSION}.tgz" &&     tar xzf ${INSTALL_DIR}/kafka.tgz -C ${KAFKA_HOME} --strip-components 1' returned a non-zero code: 2

[2020-04-19T19:37:29.915Z] scripts/Makefile:405: recipe for target 'build-image' failed

[2020-04-19T19:37:29.915Z] make[1]: *** [build-image] Error 1

[2020-04-19T19:37:29.915Z] make[1]: Leaving directory '/var/lib/jenkins/workspace/Beats_beats-beats-mbp_PR-17381/src/github.com/elastic/beats/libbeat'

[2020-04-19T19:37:29.915Z] scripts/Makefile:305: recipe for target 'testsuite' failed

[2020-04-19T19:37:29.915Z] make: *** [testsuite] Error 2

Visiting http://mirror.easyname.ch/apache/kafka/ shows that the 2.1.1 sub-folder is no longer available, which is causing the failure seen in the CI logs. The next version available is 2.2.2 so this PR updates the Kafka version in our codebase to 2.2.2.

Checklist

• My code follows the style guidelines of this project
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• I have made corresponding change to the default configuration files
• I have added tests that prove my fix is effective or that my feature works
• I have added an entry in CHANGELOG.next.asciidoc or CHANGELOG-developer.next.asciidoc

[elasticmachine]

Pinging @elastic/integrations-services (Team:Services)

[kaiyan-sheng]

CI is still red but doesn't seem to be related to kafka version anymore.