.Upgrade guide for 13.5.2 v13.5.2

This guide is valid for the following wallboard release

	Source Release	Destination Release	Deployment Mode
	13.5.1	13.5.2	Singleton/HA

Stop the current release services by executing the following command inside the current-release-deployment-dir/wallboard/ directory.
```
docker-compose down
```

Open docker-compose.yml file in current-release-deployment-dir/wallboard/docker directory and update the queue-service & synchronizer docker images

gitlab.expertflow.com:9242/wallboards-dashboards/wallboard-microservices/queue-backend:13.3.4-queue
gitlab.expertflow.com:9242/wallboards-dashboards/synchronizer:13.6.1

Run the following commands on the wallboard database in SQL Server Management Studio.

delete from queue_stats_historical_ccx

Alter table queue_stats_historical_ccx
add session_seq_num smallint NOT NULL,profile_id int NOT NULL,node_id smallint NOT NULL,target_id int NOT NULL,target_type smallint NOT NULL,q_index smallint NOT NULL

ALTER TABLE queue_stats_historical_ccx
ADD CONSTRAINT ccx_unique_rec UNIQUE (session_id,session_seq_num,profile_id,node_id,target_id,target_type,q_index);

Execute the following commands inside the current-release-deployment-dir/wallboard/ directory.
```
./install.sh
```
Run the following command to ensure that all the components are up and running.
```
docker ps
```