Allowing local backup in the backup functionality

As of today when asking maxscale to take a backup, we have to run the following command line :
maxctrl call command mariadbmon async-create-backup MyMonitor MySourceServer wednesday_161122

which executes through ssh, the following :

mariabackup --backup --safe-slave-backup --stream=xbstream --parallel=1 | pigz -c | socat - TCP-LISTEN:<port>

i would like to have the possibility to add a local keyword option to the maxctrl command line which would both remove the --stream=mbstram and replace the | socat - TCP-LISTEN:<port> by > $backup_storage_path/wednesday_161122

so as a summary this maxctrl command line :

maxctrl call command mariadbmon async-create-backup MyMonitor MySourceServer wednesday_161122 local

would run the command

mariabackup --backup --safe-slave-backup --parallel=1 [ pigz -dc > $backup_storage_path/wednesday_161122