add hash to schema

Author: anandkumarpatel

lib/models/mongo/schemas/infra-code-version.js

@@ -103,7 +103,10 @@ var InfraCodeVersionSchema = new Schema({
     'default': Date.now,
     index: true,
     validate: validators.beforeNow({model: 'ContextVersion', literal: 'Created'})
-  }
+  },
+  hash: {
+    type: String
+  },
 });
 
 extend(InfraCodeVersionSchema.methods, BaseSchema.methods);