REDIS_DATASET

Hello,
Find attached Pull request to create a new Redis DataSet as described initially here:
http://mail-archives.apache.org/mod_mbox/jmeter-dev/201312.mbox/%3CCAH9fUpaA1sd%2BkkZ%2BFfG0Eu5NPMkVasDvuO%2BmyZB0q00b6-diVA%40mail.gmail.com%3E

Jars dependencies are:
- commons-pool-1.5.4.jar
- jedis-2.2.1.jar

Philippe M.
@philmdot