Setup instructions involve installing wrong version of Java

[swathugala]

On https://datastax.github.io/cstar_perf/setup_cstar_perf_tool.html, the instructions to prepare the fab directory entail installing java 1.7 in this line:

wget --no-cookies --header "Cookie: oraclelicense=accept-securebackup-cookie;" http://download.oracle.com/otn-pub/java/jdk/7u67-b01/jdk-7u67-linux-x64.tar.gz

which in turn causes errors when running cstar_perf_bootstrap apache/cassandra-3.0 because version 1.8 is required but it finds this java instead.

[swathugala]

As well as an outdated version of ant