Transfer of the testing environment to FESA DU Class

• Tests generated in the path:FESAClassDUDirectory/src/Test{deploy_unit_name}
• When running the test script, you must provide the device name and server.
• From now on, the user must take care of the commissioning of the FEC
• Init befor all tests, it also checks if there is a correct connection to the device

Related Issues: #9 (closed) , #12 (closed) , #13 (closed), #14 (closed), #15, #17 (closed)