Fix Sensor URI path with user input CHASSIS_ID

Resolves  openbmc/openbmc-test-automation#2173

Change-Id: Iedcae97242882e9ae635ac21a685f25d4a388f0e
Signed-off-by: George Keishing <gkeishin@in.ibm.com>
diff --git a/systest/test_bmc_poll_errors.robot b/systest/test_bmc_poll_errors.robot
index 7105718..e72f636 100755
--- a/systest/test_bmc_poll_errors.robot
+++ b/systest/test_bmc_poll_errors.robot
@@ -40,7 +40,7 @@
 Enumerate Sensors And Check For Errors
     [Documentation]  Enumerate and check if there is any error reported.
 
-    Redfish.Get  /redfish/v1/Chassis/chassis/Sensors
+    Redfish.Get  /redfish/v1/Chassis/${CHASSIS_ID}/Sensors
 
     Check For Error Logs  ${ESEL_IGNORE_LIST}