Unable to connect to Cube SQL API from another Cube instance

While connecting to a Cube SQL API from another Cube instance, there will be a connection error:
```
Error while loading DB schema
error: Unable to parse: ParserError("Expected equals sign or TO, found: ZONE") QUERY: SET TIME ZONE 'UTC' at Parser.parseErrorMessage
```

**To Reproduce**
Steps to reproduce the behavior:
1. Start cube instance A connects to a database and create some models. A is hosting in Server 1 with exporting PG port 10001;
2. Start another cube instance B in Server 2 and connects to SQL API of cube instance A as a PG datasource (with connecting to Svr1's port 10001).

**Expected behavior**
Connect successfully and the data measures/schema from A can be loaded for creating model in B.

May be related to #5512