samples: sesnor: thermo: add harness_config for testing

add harness_config for console for testing

Signed-off-by: Hake Huang <hake.huang@oss.nxo.com>

samples/sensor/thermometer/sample.yaml

@@ -3,7 +3,6 @@ sample:
 tests:
   sample.sensor.thermometer:
     tags: sensors
-    harness: sensor
     filter: dt_alias_exists("ambient-temp0")
     integration_platforms:
       - nrf52840dk/nrf52840   # mcp9700a
@@ -11,3 +10,11 @@ tests:
       - robokit1              # ntc_thermistor
       - adi_eval_adin1110ebz  # adt7420
       - frdm_mcxn947/mcxn947/cpu0 # p3t1755
+    harness: console
+    harness_config:
+      fixture: sensor_ambient_temp
+      type: multi_line
+      regex:
+        - "Thermometer Example (.*)"
+        - "Temperature device is 0x[0-9|a-z]+, name is [a-z|0-9]+@[a-z|0-9]+"
+        - "Temperature is [0-9|.]+°C"