Create v1 data generator

[milindsrivastava1997]

• Assume some network topologies

• Randomly assign tasks to nodes

• Include a notion of task arrival pattern

• v1 task arrival pattern -- all tasks start at t=0 and never end

Task arrival pattern is defined by:
{taskID, required CPU, required memory, required bandwidth, task duration, task start time}

Output of data generator is 3 * 5 CSV files.

As specified in #4

We have 5 entities:

• task
• node
• edge
• (task, node)
• (task, edge)

We have 3 raw metrics:

• CPU
• Memory
• Bandwidth