reformat code

*  add security stack for futur usage
* fix pep8 formatting issues

wo/cli/plugins/site_functions.py

@@ -697,7 +697,9 @@ def sitebackup(self, data):
     if data['wo_db_name']:
         Log.info(self, 'Backing up database \t\t', end='')
         try:
-            if not WOShellExec.cmd_exec(self, "mysqldump --single-transaction {0} | pigz -9 -p\"$(nproc)\" > {1}/{0}.gz"
+            if not WOShellExec.cmd_exec(self, "mysqldump --single-transaction "
+                                        "{0} | pigz -9 -p\"$(nproc)\" "
+                                        "> {1}/{0}.gz"
                                         .format(data['wo_db_name'],
                                                 backup_path)):
                 Log.info(self,

wo/cli/plugins/stack.py

@@ -1159,7 +1159,7 @@ class WOStackController(CementBaseController):
                     WOFileUtils.searchreplace(self, "{0}22222/htdocs/index.php"
                                               .format(WOVariables.wo_webroot),
                                               "eth0",
-                                              "{0}".format(WOVariables.wo_wan_interface))
+                                              "{0}".format(WOVariables.wo_wan))
 
                     Log.debug(self, "Setting Privileges to "
                               "{0}22222/htdocs"