Updates tests

tests/deep-clean.sh

 #!/bin/bash -eux
 
 image=$1
+BACKUP_DESTINATION=`cat /data/BACKUP_DESTINATION`
 
 /data/indiehosters/tests/clean-image.sh $image
 
-ssh core@backup.dev "rm -rf $image.test"
+ssh $BACKUP_DESTINATION "rm -rf $image.test"

tests/finish.sh

 #!/bin/bash -eux
 
-systemctl list-units | grep failed
+systemctl list-units | grep -c failed | grep 0
 
 applications=( static static-git wordpress known)