Test: add a delete command in the server.
Test: add a delete command in the server.

1248/liblwm2m,marcostoc/liblwm2m,01org/liblwm2m,domedambrosio/liblwm2m,msangoi/liblwm2m,msangoi/liblwm2m,ismagom/lwm2m-galileo,fab13n/liblwm2m,dientaufan/liblwm2m,Passific/liblwm2m,ismagom/lwm2m-galileo,kartben/liblwm2m,sbernard31/liblwm2m,javiergp/liblwm2m