Try to obtain token from cronjob for auth

fix link to retrieve token

remove wrong character cronjob

Try to first obtain token

ci/kubernetes/cronjob.yaml

@@ -13,8 +13,8 @@ spec:
             image: byrnedo/alpine-curl
             command: ["/bin/sh", "-c"]
             args:
-            - curl http://backend:8000/api/catalog/admin/compute-gene-length/;
-              echo $CRON_USER && echo $CRON_PASSWORD
+            - >
+              curl http://backend:8000/api/auth/obtain_token/ -H "Content-Type: application/json" --request POST --data '{"username": "$CRON_USER", "password": "$CRON_PASSWORD"}'
             env:
             - name: CRON_USER
               valueFrom: