[maven-release-plugin] prepare release vertx-kieserver-client-0.9.1
[maven-release-plugin] prepare release vertx-kieserver-client-0.9.1

diabolicallabs/vertx-kieserver-client,diabolicallabs/vertx-kieserver-client,diabolicallabs/vertx-kieserver-client,diabolicallabs/vertx-kieserver-client