fix mongo check in getDevices query
fix mongo check in getDevices query

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