add square brackets for prod server

4 jobs for 8-noe-css-har-forsvunnet-i-oppgraderinger-endringer in 1 minute and 28 seconds (queued for 1 second)
Name Stage Failure
failed
deploy_prod Deploy Prod
Agent pid 13
$ echo $MARCUS_PROD_KEY | base64 --decode | ssh-add -
Identity added: (stdin) (fedora@oyvind-ansible2.novalocal)
$ rsync -v -r -e "ssh -o StrictHostKeyChecking=no" --exclude 'static/js/blackbox-search' --delete ./ $MARCUS_USER@"[$MARCUS_SERVER_IPV6]":"$DEST"
ssh: connect to host 2001:700:200:13::43 port 22: Connection refused
rsync: connection unexpectedly closed (0 bytes received so far) [sender]
rsync error: unexplained error (code 255) at io.c(235) [sender=3.1.3]
Cleaning up file based variables
ERROR: Job failed: exit code 1