Modified the default progress bar's width to 80. This is in regards t…

…o the conversation on PR hashicorp#5851.

common/step_download.go

@@ -60,7 +60,7 @@ func GetDefaultProgressBar() pb.ProgressBar {
 	bar.SetUnits(pb.U_BYTES)
 	bar.Format("[=>-]")
 	bar.SetRefreshRate(1 * time.Second)
-	bar.SetWidth(25)
+	bar.SetWidth(80)
 
 	return *bar
 }