Fix pldmtool output to support json format

Change-Id: I92a6af0ca1ee5edf77fda1439435bf3956881b0d
Signed-off-by: Sridevi Ramesh <sridevra@in.ibm.com>
diff --git a/pldm/test_pldm_oem.robot b/pldm/test_pldm_oem.robot
index 005ed3d..112f8a5 100644
--- a/pldm/test_pldm_oem.robot
+++ b/pldm/test_pldm_oem.robot
@@ -18,6 +18,6 @@
 
     ${pldm_output}=  Pldmtool  oem-ibm GetAlertStatus -i 0
     Rprint Vars  pldm_output
-    Valid Value  pldm_output['rack_entry']  ['0xff000030']
-    Valid Value  pldm_output['pri_cec_node']  ['0x00008030']
+    Valid Value  pldm_output['rack entry']  ['0xff000030']
+    Valid Value  pldm_output['pri cec node']  ['0x00008030']