use lewis emulators rather than deviceemulator#662

rerpha wants to merge 4 commits intomasterISISComputingGroup/EPICS-IOC_Test_Framework:masterfrom

move_deviceemulator_lewis_emus_into_lewisISISComputingGroup/EPICS-IOC_Test_Framework:move_deviceemulator_lewis_emus_into_lewisCopy head branch name to clipboard