refactor: more explicit error confirmation for http query route error.

[youngsofun]

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Summary

also including the case that server restart (assert: always with new node_id).
we can tell it from query timeout at once.

• need to test with the clients
  • go
  • java
  • bendsql
  • py

Tests

• Unit Test
• Logic Test
• Benchmark Test
• No Test - Explain why

Type of change

• Bug Fix (non-breaking change which fixes an issue)
• New Feature (non-breaking change which adds functionality)
• Breaking Change (fix or feature that could cause existing functionality not to work as expected)
• Documentation Update
• Refactoring
• Performance Improvement
• Other (please describe):

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This change is 

[flaneur2020]

it need a comprehensive test over all the drivers after api route changes, and there're also a few in-house query clients (like PHP) not using our drivers at all. if it's an enhancement over the error message, i guess we can consider a less invasive way to make it.

[youngsofun]

@flaneur2020 plz review again

[flaneur2020]

LGTM