Added configurator.json

The configurator.json will be used to validate the parameters, and
provide an API add parameters.

software/erp5/configuration.json

+{
+  "name":"Parameter",
+  "title": "Default parameter schema for ERP5 Software Release.",
+  "type": "object",
+  "additionalProperties": false,
+  "properties": {
+    "flavour" : {
+        "type" : "string",
+        "title" : "Sofware Release Flavour",
+        "optional": true,
+        "default" : "default",
+        "enum" : ["default", "configurator"]
+      },
+
+    "bt5_list": {
+       "type":"array",
+       "title" : "Business Template List",
+       "items" : {"type": "string"},
+       "optional" : true
+      },
+
+    "bt5_repository_list": {
+       "type" : "array",
+       "title" : "Business Template Repository List",
+       "items" : {"type": "string"},
+       "optional" : true
+     }
+  }
+}

software/erp5/software.cfg

@@ -26,3 +26,11 @@ url = ${:_profile_base_location_}/instance.cfg
 md5sum = 2a1445f3bcf30d8def43846317a4be5b
 output = ${buildout:directory}/template.cfg
 mode = 0644
+
+[validator]
+# Default json schema for instance parameters.
+recipe = slapos.recipe.template
+url = ${:_profile_base_location_}/configuration.json
+md5sum = cbe1d75339c6cb20e1aef818797face1 
+output = ${buildout:directory}/validator.json
+mode = 0644