Clear the particle dict prior to discover
Clear the particle dict prior to discover

Change-Id: I3dc54f65345f0c0708f3dfa21861874ea576581a

oceanobservatories/mi-instrument,renegelinas/mi-instrument,vipullakhani/mi-instrument,oceanobservatories/mi-instrument,vipullakhani/mi-instrument,janeen666/mi-instrument,janeen666/mi-instrument,tapanagupta/mi-instrument,danmergens/mi-instrument,danmergens/mi-instrument,janeen666/mi-instrument,renegelinas/mi-instrument