Fixed command /usr/bin/thermalctld to /usr/local/bin/thermalctld in platform test (#3178)

The file path was changed in bellow pull request, but tests in
sonic-mgmt were not updated, after that PR was merged
sonic-net/sonic-buildimage#6176

Author: andriyz-nv

tests/platform_tests/test_platform_info.py

@@ -439,9 +439,13 @@ def test_thermal_control_fan_status(duthosts, enum_rand_one_per_hwsku_hostname,
 
         single_fan_mocker = mocker_factory(duthost, 'SingleFanMocker')
         time.sleep(THERMAL_CONTROL_TEST_WAIT_TIME)
+        if "201811" in duthost.os_version or "201911" in duthost.os_version:
+            THERMALCTLD_PATH = '/usr/bin/thermalctld'
+        else:
+            THERMALCTLD_PATH = '/usr/local/bin/thermalctld'
 
-        _fan_log_supported = duthost.command('docker exec pmon grep -E "{}" /usr/bin/thermalctld'\
-                .format(LOG_EXPECT_INSUFFICIENT_FAN_NUM_RE), module_ignore_errors=True)
+        _fan_log_supported = duthost.command('docker exec pmon grep -E "{}" {}'\
+                .format(LOG_EXPECT_INSUFFICIENT_FAN_NUM_RE, THERMALCTLD_PATH), module_ignore_errors=True)
 
         if single_fan_mocker.is_fan_removable():
             loganalyzer.expect_regex = [LOG_EXPECT_FAN_REMOVE_RE, LOG_EXPECT_INSUFFICIENT_FAN_NUM_RE]