redfish: extended: dump: using Redfish Delete All BMC Dumps to delete BMC Dump

Summary:
Call Keywords "Redfish Delete All BMC Dumps" to replace Keywords
"Delete All Dumps" when deleting BMC Dump.

Tested:
Run robot "Verify Core Dump Size" and
"Verify Dump After Host Watchdog Error Injection"of test_bmc_dump.robot.

Signed-off-by: Tim Lee <timlee660101@gmail.com>
Change-Id: I1868d4665c669fe2130d217e37e52b9a2a35e2f5
diff --git a/redfish/extended/test_bmc_dump.robot b/redfish/extended/test_bmc_dump.robot
index b97b851..cd7e2f1 100644
--- a/redfish/extended/test_bmc_dump.robot
+++ b/redfish/extended/test_bmc_dump.robot
@@ -20,7 +20,7 @@
     [Documentation]  Verify BMC core dump size is under 200k.
     [Tags]  Verify_Core_Dump_Size
 
-    Delete All Dumps
+    Redfish Delete All BMC Dumps
     Trigger Core Dump
     Wait Until Keyword Succeeds  2 min  10 sec  Get Dump Entries
 
@@ -37,7 +37,7 @@
 
     Redfish Power On
 
-    Run Keyword And Ignore Error  Delete All Dumps
+    Run Keyword And Ignore Error  Redfish Delete All BMC Dumps
 
     # Enable auto reboot
     Set Auto Reboot  ${1}