fix azureDisk warns about disk format failure

pkg/volume/azure_dd/azure_common_linux.go

@@ -150,9 +150,10 @@ func formatIfNotFormatted(disk string, fstype string, exec mount.Exec) {
 		_, err := exec.Run("mkfs."+fstype, args...)
 		if err == nil {
 			// the disk has been formatted successfully try to mount it again.
-			glog.Infof("azureDisk - Disk successfully formatted (mkfs): %s - %s %s", fstype, disk, "tt")
+			glog.Infof("azureDisk - Disk successfully formatted with 'mkfs.%s %v'", fstype, args)
+		} else {
+			glog.Warningf("azureDisk - Error formatting volume with 'mkfs.%s %v': %v", fstype, args, err)
 		}
-		glog.Warningf("azureDisk - format of disk %q failed: type:(%q) target:(%q) options:(%q)error:(%v)", disk, fstype, "tt", "o", err)
 	} else {
 		if err != nil {
 			glog.Warningf("azureDisk - Failed to check if the disk %s formatted with error %s, will attach anyway", disk, err)