Fix Rule Set Up in Integration Tests

[hiranya911]

Integration tests for DB updates rules for a specific child node in the database (_adminsdk). But if there are any top-level rules already defined in the environment they are going to take precedence over what the test suite sets, which may cause tests to fail.

To fix this, the test suite should overwrite the entire rules configuration at test set up (not just the child rules).

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[hiranya911]

Fixed