L2SS-589: Update beam attribute to new name

tangostationcontrol/tangostationcontrol/integration_test/default/devices/test_device_beam.py

@@ -67,8 +67,8 @@ class TestDeviceBeam(AbstractTestBases.TestDeviceBase):
         time.sleep(3)
         
         # Verify writing operation does not lead to errors
-        self.proxy.HBAT_set_pointing(numpy.array([["J2000","0deg","0deg"]] * 96).flatten())  # write values to RECV
-        HBAT_delays_r2 = numpy.array(recv_proxy.read_attribute('HBAT_BF_delays_RW').value)
+        self.proxy.HBAT_set_pointing(self.pointing_direction)  # write values to RECV
+        HBAT_delays_r2 = numpy.array(recv_proxy.read_attribute('HBAT_BF_delay_steps_RW').value)
         self.assertIsNotNone(HBAT_delays_r2)
 
         # Verify delays changed (to be discussed)