Use numerics

Author: gunnarvelle

image-api/src/main/scala/no/ndla/imageapi/controller/RawController.scala

@@ -180,7 +180,7 @@ class RawController(using
     }
     imageStorage
       .uploadFromStream(
-        s"${image.fileShortName}_width=${imageParams.width}_height=${imageParams.height}.${image.format}",
+        s"${image.fileShortName}_width=${imageParams.width.getOrElse(0)}_height=${imageParams.height.getOrElse(0)}.${image.format}",
         resized.get.stream,
         resized.get.contentType,
         resized.get.contentLength

image-api/src/main/scala/no/ndla/imageapi/service/ImageStorageService.scala

@@ -64,7 +64,7 @@ class ImageStorageService(using
   def get(imageKey: String, imageParams: ImageParams): Try[(ImageStream, Boolean)] = {
     val lastPeriod = imageKey.lastIndexOf(".")
     val (pre, post) = imageKey.splitAt(lastPeriod)
-    val maybeFileName = s"${pre}_width=${imageParams.width}_height=${imageParams.height}${post}"
+    val maybeFileName = s"${pre}_width=${imageParams.width.getOrElse(0)}_height=${imageParams.height.getOrElse(0)}${post}"
     if (head(maybeFileName)) {
       getObject(maybeFileName, true)
     } else {