add las recovery doc

admindoc/las/recover-db.md

+---
+layout: page
+title: How to recover MySQL and Neo4j backup
+parent: LAS
+grand_parent: Admin Documentation
+nav_order: 3
+
+---
+
+# How to recover MySQL and Neo4j backup
+
+## 1. Enter into backup directory
+> Using `cd` command go into directory with your backup.
+> The selected directory must have a **mysql** and **neo4j** directory inside.
+
+## 2. Run script
+> Execute `/home/lasuser/las-docker-edirex-ansible/roles/backup/files/restore_mysql.sh` script.
+
+## 3. That is all.
+> The script will overwrite **MySQL** inside **lasmysql** container and download image for another container called **docker-neo4j-backup** connected to neo4j data volume with **recover** parameter. This container will replace current data with data from backup and restart the container. Please check script log to make sure the process was successful.
+
+...