added log_retention to upd_dev_collection.sql

install/sql/incremental/upd_dev_collection.sql

-ALTER TABLE `web_domain` CHANGE `folder_directive_snippets` `folder_directive_snippets` TEXT CHARACTER SET utf8 COLLATE utf8_general_ci NULL;
\ No newline at end of file
+ALTER TABLE `web_domain` CHANGE `folder_directive_snippets` `folder_directive_snippets` TEXT CHARACTER SET utf8 COLLATE utf8_general_ci NULL;
+ALTER TABLE `web_domain` ADD `log_retention` INT NOT NULL DEFAULT '30' AFTER `https_port`;