test eth_getBlockByHash

[noot]

System info: [Include Ethermint commit, operating system name, and other relevant details]

Steps to reproduce:

1. test TestBlockBloom_Hash

 ETHERMINT_NODE_HOST=http://localhost:8545 ETHERMINT_INTEGRATION_TEST_MODE=stable go test ./tests/... -test.v -test.run ^TestBlockBloom_Hash

2. the test fails because the call to eth_getBlockByHash fails to find a block number with that hash

Expected behavior: [What you expected to happen]

block is found

Actual behavior: [What actually happened]

block hash to height mapping cannot be found

Additional info: [Include gist of relevant config, logs, etc.]

[ayeteng]

eth_getBlockByNumber should return the block hash but not working either.