Bump to version 2.2.1

Author: Romain GÉRARD

build.gradle

@@ -1,5 +1,5 @@
 group 'com.criteo.nosql'
-version '2.2.0'
+version '2.2.1'
 
 apply plugin: 'java'
 apply plugin: 'com.github.johnrengelman.shadow'

docker/Dockerfile

@@ -1,7 +1,7 @@
 FROM openjdk:11-jre-slim-sid
 
-ARG EXPORTER_VERSION=2.2.0
-ARG EXPORTER_SHA512=071139ab686fe98bb940c41485d6ce25b50781e0c4795fc9d006d6d5081f398c6c17a9cebf11d17c5f03873ad915252278149787da794b42d85082d0ba6c69a4
+ARG EXPORTER_VERSION=2.2.1
+ARG EXPORTER_SHA512=ef83fc1404fce6c6b949a9dfe0f1f0bba9b2d21591550b954439723500e0bc17ee083d9995cc212d646e519614fef0f7c6802ce2635319bdd3ca69b0c51e91ad
 
 RUN apt-get update && apt-get install -y --no-install-recommends \
 		netcat \