Hibernate 5 Multitenancy tutorial (#1150)

* First commit for Hibernate 5 Multitenancy tutorial

* Changes to fix the code.

* Added hibernate begin transaction code.

* Changes to solve the multitenancy issue.

* Changes to integrate h2

* Changing configs to solve the error

* Changes to solve h2 error...

* Changes to fix H2 error.

* Cleaned POM.xml and changed entity name

* Changes table name to supplier

* Removed MySql Dep from pom.xml.

* Changes as per comment in the PR...

hibernate5/src/main/java/com/baeldung/hibernate/HibernateUtil.java

@@ -0,0 +1,24 @@
+package com.baeldung.hibernate;
+
+import org.hibernate.SessionFactory;
+import org.hibernate.cfg.Configuration;
+
+public class HibernateUtil {
+
+    private static final SessionFactory sessionFactory;
+
+    static {
+        try {
+            Configuration configuration = new Configuration().configure();
+            sessionFactory = configuration.buildSessionFactory();
+
+        } catch (Throwable ex) {
+            System.err.println("Initial SessionFactory creation failed." + ex);
+            throw new ExceptionInInitializerError(ex);
+        }
+    }
+
+    public static SessionFactory getSessionFactory() {
+        return sessionFactory;
+    }
+}