update col name to policy_revision

Author: prakash100198

scripts/sql/32703400_alter_cd_workflow_runner.down.sql

@@ -7,4 +7,4 @@ WHERE node_type = 'CD'
   AND event_type_id = 1
   AND channel_type='ses';
 
-ALTER TABLE global_policy DROP COLUMN IF EXISTS resource_version;
+ALTER TABLE global_policy DROP COLUMN IF EXISTS policy_revision;

scripts/sql/32703400_alter_cd_workflow_runner.up.sql

@@ -8,5 +8,6 @@ WHERE node_type = 'CD'
   AND channel_type='ses';
 
 --adding resource_version to global_policy table for maintaining optimistic concurrency control
-ALTER TABLE global_policy ADD COLUMN IF NOT EXISTS resource_version VARCHAR(20);
-
+ALTER TABLE global_policy ADD COLUMN IF NOT EXISTS policy_revision VARCHAR(20);
+-- Create a sequence for global policy revisions
+CREATE SEQUENCE global_policy_policy_revision_seq;