add variables and threds

src/EEHGMaster.py

@@ -23,6 +23,7 @@ from tango import AttrQuality, DispLevel, DevState
 from tango import AttrWriteType, PipeWriteType
 # Additional import
 # PROTECTED REGION ID(EEHGMaster.additionnal_import) ENABLED START #
+import threading
 import utili
 # PROTECTED REGION END #    //  EEHGMaster.additionnal_import