Change Saturation from object to array in rca_data_schema

Saturation is currently an object and should instead be an array of objects, i.e.

         "Saturation": {
                "type": "array",
                "items": {
			"type": "object",
			"properties": {							
				"Value": {
					"type": "number"
				},
				"UnitOfMeasure": {
					"type": "string",
					"pattern": "^[\\w\\-\\.]+:reference-data\\-\\-UnitOfMeasure:[\\w\\-\\.\\:\\%]+:[0-9]*$"
				},
				"Type": {
					"type": "string"
				},
				"Method": {
					"type": "string",
					"pattern": "^[\\w\\-\\.]+:reference-data\\-\\-SaturationMethodType:[\\w\\-\\.\\:\\%]+:[0-9]*$"
				},
				"Conditions": {
					"$ref": "#/definitions/Conditions"
				},
				"additionalProperties": false
			}
                }
	},