Specify the server_id explicitly to avoid possible conflict

[jd-zhang]

Issue migrated from trac ticket # 828

component: cluster provision | priority: major

2022-06-16 15:44:13: zhangjindong@zettadb.com created the issue

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Currently, when not specified, the server_id is generated by a random, this could(although possibility is low) introduce same values for nodes inside a group.

We can generate the value explicitly, to avoid the conflict, this including the following part:

• one-key installation script
• clustermgr setup script.

[jd-zhang]

2022-06-16 15:44:20: zhangjindong@zettadb.com changed status from assigned to accepted