[openqa-tests/sam/upstream-container] Try to use correct machine

[Sam Thursfield <sthursfield src gnome org>]

commit d8ad4cef77fb0982adecbe4e0ee2221d85b0e373
Author: Sam Thursfield <sam thursfield codethink co uk>
Date:   Thu Oct 6 15:31:33 2022 +0200

    Try to use correct machine

 utils/start_job.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/utils/start_job.sh b/utils/start_job.sh
index 5034a5f..da6c949 100755
--- a/utils/start_job.sh
+++ b/utils/start_job.sh
@@ -17,6 +17,6 @@ openqa-cli api --apikey $OPENQA_API_KEY --apisecret $OPENQA_API_SECRET \
   VERSION=$version \
   FLAVOR=iso \
   ARCH=x86_64 \
-  WORKER_CLASS=$worker_class \
+  WORKER_CLASS=gitlab-runner-$worker_class \
   CASEDIR=$(pwd) \
   NEEDLES_DIR=$OPENQA_NEEDLES_GIT#$OPENQA_NEEDLES_BRANCH | tee --append openqa.log | jq -e .ids[0]