Added new naming for metrics. I found it very hard to read for example s...

Added new naming for metrics. I found it very hard to read for example:

servername.networkinterface.intelrdualbandwireless-ac7260.bytessent-sec. 

I added some changes to modify the name to look like this:

network_interface.intelr_dual_band_wireless-ac_7260.bytes_sent-sec. 

I believe it is easier to read this way.