hosting-asset-validation-baseline (#56)

Co-authored-by: Michael Hoennig <michael@hoennig.de>
Reviewed-on: https://dev.hostsharing.net/hostsharing/hs.hsadmin.ng/pulls/56
Reviewed-by: Timotheus Pokorra <timotheus.pokorra@hostsharing.net>

src/main/resources/api-definition/hs-hosting/hs-hosting-asset-schemas.yaml

@@ -53,7 +53,11 @@ components:
                 bookingItemUuid:
                     type: string
                     format: uuid
-                    nullable: false
+                    nullable: true
+                parentAssetUuid:
+                    type: string
+                    format: uuid
+                    nullable: true
                 type:
                     $ref: '#/components/schemas/HsHostingAssetType'
                 identifier:
@@ -72,7 +76,6 @@ components:
                 - type
                 - identifier
                 - caption
-                - debitorUuid
                 - config
             additionalProperties: false