Implement IPMI Network Settings Override

Adding the network config data

Fixes openbmc/openbmc#267

Change-Id: If6973c04714d6357e5da9887e3ec5f0c1aa04900
Signed-off-by: Ratan Gupta <ratagupt@in.ibm.com>
diff --git a/settings.yaml b/settings.yaml
index ccf1db0..0fb61ba 100644
--- a/settings.yaml
+++ b/settings.yaml
@@ -28,4 +28,7 @@
         name: boot_policy
         type: s
         default: "ONETIME"
-
+    networkconfig:
+        name: network_config
+        type: s
+        default: "ipaddress=,prefix=,gateway=,mac=,addr_type="