settings: Add MSL setting

MSL: minimum ship level.  Provide a setting store and interface
for the minimum ship level DBus setting interface.

Change-Id: Ib881fd28605cdfac69aa54bc2c64726d2381a6eb
Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com>
diff --git a/common/recipes-phosphor/settings/phosphor-settings-defaults/defaults.yaml b/common/recipes-phosphor/settings/phosphor-settings-defaults/defaults.yaml
index 7e0c880..2cd3b44 100644
--- a/common/recipes-phosphor/settings/phosphor-settings-defaults/defaults.yaml
+++ b/common/recipes-phosphor/settings/phosphor-settings-defaults/defaults.yaml
@@ -1,3 +1,9 @@
+/xyz/openbmc_project/control/minimum_ship_level_required:
+    Interface: xyz.openbmc_project.Control.MinimumShipLevel
+    Properties:
+        MinimumShipLevelRequired:
+           Default: 'true'
+
 /xyz/openbmc_project/control/host0/auto_reboot:
     Interface: xyz.openbmc_project.Control.Boot.RebootPolicy
     Properties: