[pica-db-backup][run.sh] Exit on failure of "children" scripts

This should kill the container if there were errors on one of the 
"children" scripts, making it more obvious that there was a problem.

pica-db-backup/run.sh

@@ -84,6 +84,7 @@ for (( i=0; i < $NB_CALLS; i++ )); do
   EXTRA_OPTS=${MYSQL_EXTRA_OPTS_ARRAY[i]} \
   BACKUP_FOLDER="/backup/${MYSQL_BACKUP_FOLDER_ARRAY[i]}/" \
   /scripts/mysql/mysql-run.sh
+  [ $? == 1 ] && exit 1
 done
 
 #Execute PostgreSQL backups
@@ -101,6 +102,7 @@ for (( i=0; i < $NB_CALLS; i++ )); do
   EXTRA_OPTS=${POSTGRES_EXTRA_OPTS_ARRAY[i]} \
   BACKUP_FOLDER="/backup/${POSTGRES_BACKUP_FOLDER_ARRAY[i]}/" \
   /scripts/postgresql/postgres-run.sh
+  [ $? == 1 ] && exit 1
 done
 
 #Execute MongoDB backups
@@ -117,6 +119,7 @@ for (( i=0; i < $NB_CALLS; i++ )); do
   CRON_TIME=${MONGO_CRON_TIME_ARRAY[i]} \
   BACKUP_FOLDER="/backup/${MONGO_BACKUP_FOLDER_ARRAY[i]}/" \
   /scripts/mongodb/mongo-run.sh
+  [ $? == 1 ] && exit 1
 done
 
 exec cron -f