Change Rvalid to Valid

Change all references to keywords like "Rvalid Values" to "Valid Values".
"Rvalid Values" has been deprecated.

Change-Id: I1b418fa69e5753c8bfb9e6a06a8b566359e10cae
Signed-off-by: Michael Walsh <micwalsh@us.ibm.com>
diff --git a/redfish/systems/test_powersupply_readings.robot b/redfish/systems/test_powersupply_readings.robot
index e9c9fba..8744205 100755
--- a/redfish/systems/test_powersupply_readings.robot
+++ b/redfish/systems/test_powersupply_readings.robot
@@ -66,7 +66,7 @@
     ${num_invalid_records}=  Get Length  ${invalid_records}
     Run Keyword If  ${num_invalid_records} > ${0}
     ...  Rprint Vars  num_invalid_records  invalid_records
-    Rvalid Value  num_invalid_records  valid_values=[0]
+    Valid Value  num_invalid_records  valid_values=[0]
 
 
 Verify Valid Records
@@ -91,7 +91,7 @@
 
     Run Keyword If  ${num_invalid_records} > ${0}
     ...  Rprint Vars  num_invalid_records  invalid_records
-    Rvalid Value  num_invalid_records  valid_values=[0]
+    Valid Value  num_invalid_records  valid_values=[0]
 
 
 Suite Teardown Execution