Introduce backup plugin to export/import settings

plugins/nginx-vhosts/backup-export

@@ -0,0 +1,5 @@
+#!/bin/bash
+VERSION="$1"
+BASE_DIR="$2"
+
+cat; find $BASE_DIR -regex ".*ssl/server\(.crt\|.key\)"; 

plugins/nginx-vhosts/backup-import

@@ -0,0 +1,11 @@
+#!/bin/bash
+VERSION="$1"
+IMPORT_DIR="$2"
+TARGET_DIR="$3"
+
+cd $IMPORT_DIR
+
+for file in `find . -regex ".*ssl/server\(.crt\|.key\)"`; do
+    mkdir -p $(dirname $TARGET_DIR$file)
+    cp $file $TARGET_DIR$file
+done