bot-status.py: Catch wget exceptions outside of wrapper

This means we aren't returning True as in yes, there
was an error. Which makes sense when you look at wget()
but elsehwere it seems backwards.

By catching the exception where we call wget, the failure
handling can be clearer.

Change-Id: If7c74431dab31503c15681ba39225a576e3da407
1 file changed