Improve upgrade scripts.

---
--- Copyright © 2016-2019 The Thingsboard Authors
---
--- Licensed under the Apache License, Version 2.0 (the "License");
--- you may not use this file except in compliance with the License.
--- You may obtain a copy of the License at
---
---     http://www.apache.org/licenses/LICENSE-2.0
---
--- Unless required by applicable law or agreed to in writing, software
--- distributed under the License is distributed on an "AS IS" BASIS,
--- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
--- See the License for the specific language governing permissions and
--- limitations under the License.
---
-
--- distributed under the License is distributed on an "AS IS" BASIS,
--- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
--- See the License for the specific language governing permissions and
--- limitations under the License.
---
-
-ALTER TABLE thingsboard.device ADD label text;

@@ -14,8 +14,6 @@
 -- limitations under the License.
 --
 
-ALTER TABLE device ADD COLUMN label varchar(255);
-
 CREATE INDEX IF NOT EXISTS idx_alarm_originator_alarm_type ON alarm(tenant_id, type, originator_type, originator_id);
 
 CREATE INDEX IF NOT EXISTS idx_event_type_entity_id ON event(tenant_id, event_type, entity_type, entity_id);

@@ -16,6 +16,7 @@
 package org.thingsboard.server.service.install;
 
 import com.datastax.driver.core.KeyspaceMetadata;
+import com.datastax.driver.core.exceptions.InvalidQueryException;
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.beans.factory.annotation.Qualifier;
@@ -259,8 +260,11 @@ public class CassandraDatabaseUpgradeService implements DatabaseUpgradeService {
                 break;
             case "2.3.1":
                 log.info("Updating schema ...");
-                schemaUpdateFile = Paths.get(installScripts.getDataDir(), "upgrade", "2.4.0", SCHEMA_UPDATE_CQL);
-                loadCql(schemaUpdateFile);
+                String updateDeviceTableStmt = "alter table device add label text";
+                try {
+                    cluster.getSession().execute(updateDeviceTableStmt);
+                    Thread.sleep(2500);
+                } catch (InvalidQueryException e) {}
                 log.info("Schema updated.");
                 break;
             default:

@@ -170,6 +170,9 @@ public class SqlDatabaseUpgradeService implements DatabaseUpgradeService {
                     log.info("Updating schema ...");
                     schemaUpdateFile = Paths.get(installScripts.getDataDir(), "upgrade", "2.4.0", SCHEMA_UPDATE_SQL);
                     loadSql(schemaUpdateFile, conn);
+                    try {
+                        conn.createStatement().execute("ALTER TABLE device ADD COLUMN label varchar(255)"); //NOSONAR, ignoring because method used to execute thingsboard database upgrade script
+                    } catch (Exception e) {}
                     log.info("Schema updated.");
                 }
                 break;