[Bug][Api] init dolphinscheduler-postgre.sql error

[yakcy]

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Describe the bug
run dolphinscheduler-postgre.sql error about next sql:
INSERT INTO t_ds_alertgroup(id,alert_instance_ids, create_user_id, group_name, description, create_time, update_time)
VALUES (1, '1,2','dolphinscheduler warning group', 'dolphinscheduler warning group', '2018-11-29 10:20:39',
'2018-11-29 10:20:39');

To Reproduce
Steps to reproduce the behavior, for example:

1. run dolphinscheduler-postgre.sql
2. see error:
   [Err] error: INSERT has more specified fields than expressions
   LINE 1: ...te_user_id, group_name, description, create_time, update_tim...

Expected behavior
fix this bug

Screenshots
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Which version of Dolphin Scheduler:
-[dev]

Additional context
Add any other context about the problem here.

Requirement or improvement

• Please describe about your requirements or improvement suggestions.

[yakcy]

I will fix it