enable keepalive pinging

[asutula]

Signed-off-by: Aaron Sutula hi@asutula.com

[carsonfarmer]

I hope you don't mind @asutula, but I added a configurable package constant to tweak this.

[asutula]

So, how does that variable get set if someone wants to change it @carsonfarmer? I guess there would some flags at the cli cmd level, that would filter down to set that var?

[carsonfarmer]

Based on my understanding, we could tweak it (now that its exported) from buckd/main.go and/or hubd/main.go, probs via some flags. Seems like we can leave it to the default for now, as I expect we're unlikely to want to change it? But I defs could be wrong and we could just add it as flags in there?

[asutula]

Ok, I'll merge it and we can address the flags thing potentially in another PR if we decide it's needed.