Request add switch to disable debug output of request/response

[jenningsloy318]

Hi,
for Client NewRequest and Do function, they are always print the whole request and response,
if it is possible to have a switch to disable debug output ?

I am implementing a monitor export for netapp storage, since prometheus will call this agent quit frequent, so a lot of output printed.

[jenningsloy318]

Hi,
I created a pull request to add this feather, Can you please reiview it ?
#31

[pyama86]

Hi! Good morning!
Japan time is now Monday morning. I'll review it from now.