Fix migration scripts (#18756)

* Fix migration scripts

Set the DB schema version in DB prior to running migration

https://community-daily.mattermost.com/boards/workspace/zyoahc9uapdn3xdptac6jb69ic/285b80a3-257d-41f6-8cf4-ed80ca9d92e5/495cdb4d-c13a-4992-8eb9-80cfee2819a4?c=c2525dbb-23eb-4fe7-8fb4-e9a5f503dc8c

```release-note
NONE
```

* Revert schema to 6.0.0 and update CI scripts

* Fix typo

* Add missing default

* Fix extra comma

Co-authored-by: Claudio Costa <cstcld91@gmail.com>

.gitlab-ci/scripts/test-schema/mysql.sh

@@ -24,8 +24,9 @@ docker run --net $DOCKER_NETWORK "$CI_REGISTRY"/mattermost/ci/images/curl:7.59.0
 
 echo "Creating databases"
 docker exec $CONTAINER_DB mysql -uroot -pmostest -e "CREATE DATABASE migrated; CREATE DATABASE latest; GRANT ALL PRIVILEGES ON migrated.* TO mmuser; GRANT ALL PRIVILEGES ON latest.* TO mmuser; "
-echo "Importing mysql dump from version 6.0"
-docker exec $CONTAINER_DB mysql -D migrated -uroot -pmostest < "$CI_PROJECT_DIR"/scripts/mattermost-mysql-6.0.sql
+echo "Importing mysql dump from version 6.0.0"
+docker exec -i $CONTAINER_DB mysql -D migrated -uroot -pmostest < "$CI_PROJECT_DIR"/scripts/mattermost-mysql-6.0.0.sql
+docker exec -i $CONTAINER_DB mysql -D migrated -uroot -pmostest -e "INSERT INTO Systems (Name, Value) VALUES ('Version', '6.0.0')"
 docker run -d -it --rm --name "$CONTAINER_SERVER" --net $DOCKER_NETWORK \
   --env-file="dotenv/test-schema-validation.env" \
   --env MM_SQLSETTINGS_DATASOURCE="mmuser:mostest@tcp(mysql:3306)/migrated?charset=utf8mb4,utf8&readTimeout=30s&writeTimeout=30s" \

.gitlab-ci/scripts/test-schema/postgres.sh

@@ -23,8 +23,9 @@ timeout 90s bash -c "until docker exec ${COMPOSE_PROJECT_NAME}_postgres_1 pg_isr
 
 echo "Creating databases"
 docker exec $CONTAINER_DB sh -c 'exec echo "CREATE DATABASE migrated; CREATE DATABASE latest;" | exec psql -U mmuser mattermost_test;'
-echo "Importing postgres dump from version 6.0"
-docker exec $CONTAINER_DB psql -U mmuser -d migrated < "$CI_PROJECT_DIR"/scripts/mattermost-postgresql-6.0.sql
+echo "Importing postgres dump from version 6.0.0"
+docker exec -i $CONTAINER_DB psql -U mmuser -d migrated < "$CI_PROJECT_DIR"/scripts/mattermost-postgresql-6.0.0.sql
+docker exec -i $CONTAINER_DB psql -U mmuser -d migrated -c "INSERT INTO Systems (Name, Value) VALUES ('Version', '6.0.0')"
 docker run -d -it --rm --name $CONTAINER_SERVER --net $DOCKER_NETWORK \
   --env-file="dotenv/test-schema-validation.env" \
   --env MM_SQLSETTINGS_DATASOURCE="postgres://mmuser:mostest@postgres:5432/migrated?sslmode=disable&connect_timeout=10" \