readd removed methods to maintain old plugins, prepare for redis cluster mode

RedisBungee-Velocity/src/main/java/com/imaginarycode/minecraft/redisbungee/RedisBungeeVelocityPlugin.java

@@ -200,6 +200,11 @@ public class RedisBungeeVelocityPlugin implements RedisBungeePlugin<Player> {
         return this.jedisSummoner.isJedisAvailable();
     }
 
+    @Override
+    public JedisSummoner getJedisSummoner() {
+        return this.jedisSummoner;
+    }
+
     @Override
     public RedisBungeeAPI getApi() {
         return this.api;