Parses hosts file - only will ask hosts that have an acme service
Generates table like :
Time, sv023-CPU_0,sv023-CPU_1,sv023-CPU_2
18:27:09, 0.0, 1.0, 0.0
18:27:14, -0, -0, -0
(-0 indicates no top data at that time at that host)
Numbers represent percentage CPU usage.