Switch procurementMethod to selective

Author: yshalenyk

src/openprocurement/tender/pricequotation/models/tender.py

@@ -187,6 +187,9 @@ class Options:
         ModelType(Document, required=True), default=list()
     )  # All documents and attachments related to the tender.
     guarantee = ModelType(Guarantee)
+        procurementMethod = StringType(
+        choices=["open", "selective", "limited"], default="selective"
+    )
     procurementMethodType = StringType(default=PMT)
     profile = StringType()
     shortlistedFirms = ListType(ModelType(ShortlistedFirm), default=list())