Update redfish host graceful restart boot type

Changes:
      - Modify "Redfish Host Reboot" to "RF SYS GracefulRestart".
      - Update lib and test cases with new boot type name.

Change-Id: I8fe9c9569bb20810604a792263eb9f76eec66d16
Signed-off-by: George Keishing <gkeishin@in.ibm.com>
diff --git a/data/applytime_table.json b/data/applytime_table.json
index 3452f18..f94df9a 100644
--- a/data/applytime_table.json
+++ b/data/applytime_table.json
@@ -4,7 +4,7 @@
         "Immediate": "Wait For Reboot  start_boot_seconds=${state['epoch_seconds']}"
     },
     "Host image": {
-        "OnReset": "Redfish Host Reboot",
+        "OnReset": "RF SYS GracefulRestart",
         "Immediate": "Wait State  os_running_match_state  10 mins"
     }
 }