[Pulsar SQL] Make Pulsar SQL get correct offload configurations (#7701)

### Motivation

Currently, Pulsar SQL can't get the correct offload configurations.

### Modifications

Make Pulsar SQL get the complete offload configurations.

### Verifying this change

Add a new integration test.
3 files changed
tree: d166ad86d120ce7cacb0ceda90a9c4cc15660d9f
  1. distribution/
  2. docker/
  3. tests/