Less verbose error handling

- if socket sending results in EHOSTUNREACH or ETIMEDOUT, don't show
  backtrace

src/class_sendDataThread.py

@@ -105,8 +105,8 @@ class sendDataThread(threading.Thread):
                     select.select([], [self.sslSock if isSSL else self.sock], [], 10)
                     logger.debug('sock.recv retriable error')
                     continue
-                if e.errno in (errno.EPIPE, errno.ECONNRESET):
-                    logger.debug('Connection error (EPIPE/ECONNRESET)')
+                if e.errno in (errno.EPIPE, errno.ECONNRESET, errno.EHOSTUNREACH, errno.ETIMEDOUT):
+                    logger.debug('Connection error (EPIPE/ECONNRESET/EHOSTUNREACH/ETIMEDOUT)')
                     return False
                 raise
             throttle.SendThrottle().wait(amountSent)