Deprecated 2.0.9/3.0.6 upgrade test (#16012)

.github/workflows/backend.yml

@@ -153,7 +153,7 @@ jobs:
       fail-fast: false
       matrix:
         db: ["mysql", "postgresql"]
-        version: ["2.0.9", "3.0.6", "3.1.9", "3.2.0"]
+        version: ["3.1.9", "3.2.0"]
     steps:
       - name: Set up JDK 8
         uses: actions/setup-java@v2

dolphinscheduler-tools/src/test/resources/3.0.0_schema/postgresql_3.0.0.sql

@@ -630,7 +630,6 @@ CREATE TABLE t_ds_relation_project_user (
                                             PRIMARY KEY (id),
                                             CONSTRAINT t_ds_relation_project_user_un UNIQUE (user_id, project_id)
 ) ;
-create index relation_project_user_id_index on t_ds_relation_project_user (user_id);
 
 --
 -- Table structure for table t_ds_relation_resources_user