Update kafka dependencies (#188)

* Update kafka-clients to 1.1.0

Using same version for slf4j dependencies.

* tighten jar dependencies

Author: jsvd

CHANGELOG.md

@@ -1,5 +1,6 @@
 ## 7.0.11
   - Internal: Update build to gradle
+  - Upgrade Kafka client to version 1.1.0
 
 ## 7.0.10
   - Fix broken 7.0.9 release

build.gradle

@@ -37,12 +37,10 @@ task wrapper(type: Wrapper) {
 }
 
 dependencies {
-    compile 'org.apache.kafka:kafka-clients:1.0.0'
-    compile 'org.slf4j:slf4j-log4j12:1.7.21'
-    compile 'org.lz4:lz4-java:1.4'
-    compile 'org.xerial.snappy:snappy-java:1.1.4'
+    compile 'org.apache.kafka:kafka-clients:1.1.0'
     compile 'org.slf4j:slf4j-api:1.7.25'
-    compile 'log4j:log4j:1.2.17'
+    compile 'org.lz4:lz4-java:1.4'
+    compile 'org.xerial.snappy:snappy-java:1.1.7.1'
 }
 
 task generateGemJarRequiresFile {

ci/run.sh

@@ -1,4 +1,4 @@
-export KAFKA_VERSION=1.0.0
+export KAFKA_VERSION=1.1.0
 ./kafka_test_setup.sh
 bundle install
 bundle exec rake vendor

docs/index.asciidoc

@@ -23,7 +23,7 @@ include::{include_path}/plugin_header.asciidoc[]
 
 Write events to a Kafka topic. 
 
-This plugin uses Kafka Client 1.0.0. For broker compatibility, see the official https://cwiki.apache.org/confluence/display/KAFKA/Compatibility+Matrix[Kafka compatibility reference].
+This plugin uses Kafka Client 1.1.0. For broker compatibility, see the official https://cwiki.apache.org/confluence/display/KAFKA/Compatibility+Matrix[Kafka compatibility reference].
 
 If you're using a plugin version that was released after {version}, see the https://www.elastic.co/guide/en/logstash/master/plugins-inputs-kafka.html[latest plugin documentation] for updated information about Kafka compatibility. If you require features not yet available in this plugin (including client version upgrades), please file an issue with details about what you need.
 
@@ -410,4 +410,4 @@ Serializer class for the value of the message
 [id="plugins-{type}s-{plugin}-common-options"]
 include::{include_path}/{type}.asciidoc[]
 
-:default_codec!:
+:default_codec!:

lib/logstash-output-kafka_jars.rb

@@ -1,9 +1,7 @@
 # AUTOGENERATED BY THE GRADLE SCRIPT. DO NOT EDIT.
 
 require 'jar_dependencies'
-require_jar('org.apache.kafka', 'kafka-clients', '1.0.0')
-require_jar('org.slf4j', 'slf4j-log4j12', '1.7.21')
-require_jar('org.lz4', 'lz4-java', '1.4')
-require_jar('org.xerial.snappy', 'snappy-java', '1.1.4')
+require_jar('org.apache.kafka', 'kafka-clients', '1.1.0')
 require_jar('org.slf4j', 'slf4j-api', '1.7.25')
-require_jar('log4j', 'log4j', '1.2.17')
+require_jar('org.lz4', 'lz4-java', '1.4')
+require_jar('org.xerial.snappy', 'snappy-java', '1.1.7.1')