slapos_jio: (Sample) allow additionalProperties

   Allow the default sample use Additional Properties for now, a more restricted version of it can be included on another file.

master/bt5/slapos_jio/SkinTemplateItem/portal_skins/slapos_hal_json_style/sample-software-schema/simpledemo/instance-input-json-in-xml-schema.json.json

@@ -2,7 +2,6 @@
   "$schema": "http://json-schema.org/draft-07/schema#",
   "type": "object",
   "description": "Extend simple parameter extension with extra only supported on json-in-xml",
-  "additionalProperties": false,
   "required": ["simple-object-is-required"],
   "allOf": [
     {

master/bt5/slapos_jio/SkinTemplateItem/portal_skins/slapos_hal_json_style/sample-software-schema/simpledemo/instance-input-schema.json.json

@@ -2,7 +2,6 @@
   "$schema": "http://json-schema.org/draft-07/schema#",
   "type": "object",
   "description": "Sample paremeters for a Simple Demo",
-  "additionalProperties": false,
   "required": [
     "simple-string-required",
     "simple-string-with-enum-required"