[OpenNebula] DebugVm created by Coin are quite small

Coin creates quite small machines for debugging it is only 2 CPU and 2GB or RAM. It is ok if you want to run just one test in a loop but it may be hard to bisect something with such machine. On the other hand that is the type of machines that we run tests on in production and we know that low resources limit may expose some bugs.

Sadly it is not possible to allocate more resources on demand.