make database host dynamic. (#334)

Co-authored-by: Gill Abada <gill@callifi.com>

devuan/resources/finish.sh

@@ -69,6 +69,7 @@ cd $cwd
 mkdir -p /etc/fusionpbx
 chown -R www-data:www-data /etc/fusionpbx
 cp fusionpbx/config.php /etc/fusionpbx
+sed -i /etc/fusionpbx/config.php -e s:"{database_host}:$database_host:"
 sed -i /etc/fusionpbx/config.php -e s:'{database_username}:fusionpbx:'
 sed -i /etc/fusionpbx/config.php -e s:"{database_password}:$database_password:"
 

devuan/resources/fusionpbx/config.php

@@ -32,7 +32,7 @@
 	//$db_path = '/var/www/fusionpbx/secure'; //the path is determined by a php variable
 
 //pgsql: database connection information
-	$db_host = 'localhost'; //set the host only if the database is not local
+	$db_host = '{database_host}';
 	$db_port = '5432';
 	$db_name = 'fusionpbx';
 	$db_username = '{database_username}';