Enhance the bootstrap script to support installing clusters during initialization

[jd-zhang]

Issue migrated from trac ticket # 829

component: cluster provision | priority: major

2022-06-16 19:21:50: zhangjindong@zettadb.com created the issue

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Currently, the flow is below:

• install the meta cluster
• init all the releated nodes
• setup the cluster_mgr and node_mgr process
• start cluster_mgr and node_mgr process

Then user can send post request to leader cluster_mgr process to create cluster or do other things.

But for performance testing or specific testing purpose, sometimes, we need to control the cluster more exactly, so we should also support installing some clusters as well during this init process.