Dump manager: Add system_dump_policy object

This commit adds the system_dump_policy object to the
xyz.openbmc_project.Settings. This is used to enable or disable
the system dump. Default value is true

Tested by:
busctl tree xyz.openbmc_project.Settings
└─/xyz
  └─/xyz/openbmc_project
    ├─/xyz/openbmc_project/dump
    │ └─/xyz/openbmc_project/dump/system_dump_policy

busctl introspect xyz.openbmc_project.Settings /xyz/openbmc_project/dump/system_dump_policy

Signed-off-by: Sunitha Harish <sunharis@in.ibm.com>
Change-Id: Iaed31f522437e0ac32a2306623121ef24957af8a
diff --git a/recipes-phosphor/settings/phosphor-settings-manager/ibm_settings.override.yml b/recipes-phosphor/settings/phosphor-settings-manager/ibm_settings.override.yml
index 33a1ec7..9a4dcb6 100644
--- a/recipes-phosphor/settings/phosphor-settings-manager/ibm_settings.override.yml
+++ b/recipes-phosphor/settings/phosphor-settings-manager/ibm_settings.override.yml
@@ -3,3 +3,9 @@
       Properties:
           Enabled:
               Default: 'true'
+
+/xyz/openbmc_project/dump/system_dump_policy:
+    - Interface: xyz.openbmc_project.Object.Enable
+      Properties:
+          Enabled:
+              Default: 'true'