feat(Schema): Added "error" operation, used to throw an error

Signed-off-by: Charles d'Avernas <[email protected]>

Author: cdavernas

schema/workflow.json

@@ -377,14 +377,14 @@
           "description": "References a sub-workflow to invoke",
           "$ref": "#/definitions/subflowref"
         },
+        "errorRef": {
+          "description": "References or defines the error to throw",
+          "$ref": "errors.json#/definitions/errorReference"
+        },
         "sleep": {
           "description": "Defines time periods workflow execution should sleep before / after function execution",
           "$ref": "#/definitions/sleep"
         },
-        "retryRef": {
-          "type": "string",
-          "description": "References a defined workflow retry definition. If not defined the default retry policy is assumed"
-        },
         "onErrors":{
           "$ref": "#/definitions/onerrors"
         },
@@ -417,6 +417,12 @@
             "name",
             "subFlowRef"
           ]
+        },
+        {
+          "required": [
+            "name",
+            "errorRef"
+          ]
         }
       ]
     },