Improve agent-cli startup time

[ypujante]

As discussed on the forum: http://glu.977617.n3.nabble.com/GLU-memory-consumption-and-response-time-jconsole-td2764498.html

"""Sorry, I wasn't too clear on the cli. It is the agent-cli. I went on with experimenting and found that there is practically no waiting time, the CPU is spinning at 100%. On a 2.66 GHz CPU it takes at least 2.5 seconds to complete a request, while on 2 GHz it takes at least 5 secs. Groovy is a great language but seems like it affects the performance quite a bit. However, these delays are not a huge issue, just a little annoying during testing. """