Add primary key to selectors table in resource groups database

Some databases like Percona XtraDB Cluster prohibit inserts into tables
without primary keys. This change also makes this table consistent with
other tables in the resource groups database.

plugin/trino-resource-group-managers/src/main/resources/db/migration/mysql/V6__add_primary_key_to_selectors.sql

@@ -0,0 +1 @@
+ALTER TABLE selectors ADD id BIGINT NOT NULL AUTO_INCREMENT PRIMARY KEY;

plugin/trino-resource-group-managers/src/main/resources/db/migration/oracle/V6__add_primary_key_to_selectors.sql

@@ -0,0 +1 @@
+ALTER TABLE selectors ADD id NUMBER GENERATED ALWAYS as IDENTITY(START with 1 INCREMENT by 1) PRIMARY KEY;

plugin/trino-resource-group-managers/src/main/resources/db/migration/postgresql/V6__add_primary_key_to_selectors.sql

@@ -0,0 +1 @@
+ALTER TABLE selectors ADD COLUMN id BIGSERIAL PRIMARY KEY;