Upload custom modules to all tsung-slave nodes.

[loguntsov]

Tsung has option:

-X <dir> add additional erlang load paths (multiple -X arguments allowed)

it can be used for load custom modules. And now we should keep all custom modules in all slave-nodes with same path.

So will be fine if tsung-controller would upload needed modules to all tsung-slave nodes in dynamic mode via rpc call.

May we already have this way ?
Thanks.

[tisba]

Hey @loguntsov. I've started to work on this a while ago, but I just don't find the time to finish it up. You can find the incomplete PR here #99 in case you want to lent a hand...