added coap conf to sample
added coap conf to sample

Qbitus/meshblu,osokay/IotServerCore,osokay/IotServerCore,masato/meshblu,masato/meshblu-dev,Qbitus/meshblu,masato/meshblu-dev,ChemTics/meshblu,dommert/meshblu,jaambee/meshblu,atyenoria/meshblu,atyenoria/meshblu,octoblu/meshblu,ChemTics/meshblu,dommert/meshblu,ChemTics/meshblu,dommert/meshblu,octoblu/meshblu,masato/meshblu,osokay/IotServerCore,jaambee/meshblu,Qbitus/meshblu,jaambee/meshblu,masato/meshblu-dev,masato/meshblu,atyenoria/meshblu