[cluster-test] Report error when cluster setup fails
[cluster-test] Report error when cluster setup fails

This is needed so user get better feedback in land blocking bot comment

Closes: #5685

aptos-labs/aptos-core,aptos-labs/aptos-core,aptos-labs/aptos-core,aptos-labs/aptos-core,libra/libra,libra/libra,libra/libra,aptos-labs/aptos-core,aptos-labs/aptos-core,libra/libra,aptos-labs/aptos-core,libra/libra