clusterloader2: Allow setting masternode and masterip through cli
clusterloader2: Allow setting masternode and masterip through cli

sjug/perf-tests,kubernetes/perf-tests,shyamjvs/perf-tests,kubernetes/perf-tests,kubernetes/perf-tests,shyamjvs/perf-tests,shyamjvs/perf-tests,sjug/perf-tests,sjug/perf-tests,sjug/perf-tests,shyamjvs/perf-tests,kubernetes/perf-tests,sjug/perf-tests,kubernetes/perf-tests,shyamjvs/perf-tests