communicator/ssh: clearer logging [GH-699]

communicator/ssh/communicator.go

@@ -118,6 +118,7 @@ func (c *comm) Start(cmd *packer.RemoteCmd) (err error) {
 	go func() {
 		failures := 0
 		for {
+			log.Printf("[DEBUG] Background SSH connection checker is testing")
 			dummy, err := c.config.Connection()
 			if err == nil {
 				failures = 0

communicator/ssh/connect.go

@@ -11,7 +11,6 @@ import (
 // is suitable for use with the SSH communicator configuration.
 func ConnectFunc(network, addr string) func() (net.Conn, error) {
 	return func() (net.Conn, error) {
-		log.Printf("Opening conn for SSH to %s %s", network, addr)
 		return net.DialTimeout(network, addr, 15*time.Second)
 	}
 }