mgr/volumes: Add human-readable flag to volume info command Reviewed-by: Venky Shankar <vshankar@redhat.com> Reviewed-by: Dhairya Parmar <dparmar@redhat.com> Reviewed-by: Kotresh HR <khiremat@redhat.com> Reviewed-by: Anthony D'Atri <anthony.datri@gmail.com> Reviewed-by: Ramana Raja <rraja@redhat.com>