Fix bug causing mysqldump to fail

library/mysql_db

@@ -109,7 +109,7 @@ def db_delete(cursor, db):
     return True
 
 def db_dump(host, user, password, db_name, target):
-    res = os.system("/usr/bin/mysqldump -q -h "+host+"-u "+user+ " --password="+password+" "
+    res = os.system("/usr/bin/mysqldump -q -h "+host+" -u "+user+ " --password="+password+" "
             +db_name+" > "
             +target)
     return (res == 0)