Get RPC tests to pass

[jbowen93]

https://github.com/celestiaorg/ethermint/tree/main/tests/rpc

Run with MODE=rpc HOST=http://127.0.0.1:8545 go test ./tests/rpc/...

Child Issues

• Fix RPC TestEth_GetFilterChanges_* tests #8
• Fix RPC TestEth_coinbase fails #9
• Fix RPC TestEth_Pending_GetTransactionCount #10
• Fix RPC Test TestEth_GetProof #11
• Fix RPC Test TestEth_PendingTransactionFilter #12
• Disable failing RPC Integration tests #17

[jbowen93]

--- FAIL: TestEth_Pending_GetTransactionCount (20.65s)
    rpc_pending_test.go:97: Pending nonce before tx is 13
    rpc_pending_test.go:100: Current nonce is 13
    rpc_pending_test.go:112:
        	Error Trace:	rpc_pending_test.go:112
        	Error:      	Expected value not to be nil.
        	Test:       	TestEth_Pending_GetTransactionCount
--- FAIL: TestEth_coinbase (1.00s)
    rpc_test.go:101:
        	Error Trace:	rpc_test.go:101
        	            				rpc_test.go:153
        	Error:      	Expected nil, but got: &rpc.Error{Code:-32000, Message:"rpc error: code = InvalidArgument desc = rpc error: code = InvalidArgument desc = empty address string is not allowed: invalid request", Data:interface {}(nil)}
        	Test:       	TestEth_coinbase
--- FAIL: TestEth_GetProof (14.58s)
    rpc_test.go:171:
        	Error Trace:	rpc_test.go:171
        	Error:      	Expected value not to be nil.
        	Test:       	TestEth_GetProof
--- FAIL: TestEth_GetFilterChanges_BlockFilter (15.56s)
    rpc_test.go:218:
        	Error Trace:	rpc_test.go:218
        	Error:      	Expected value not to be nil.
        	Test:       	TestEth_GetFilterChanges_BlockFilter
        	Messages:   	transaction failed
--- FAIL: TestEth_GetFilterChanges_NoTopics (14.61s)
    rpc_test.go:360:
        	Error Trace:	rpc_test.go:360
        	Error:      	Not equal:
        	            	expected: 1
        	            	actual  : 0
        	Test:       	TestEth_GetFilterChanges_NoTopics
--- FAIL: TestEth_GetFilterChanges_Topics_AB (16.59s)
    rpc_test.go:405:
        	Error Trace:	rpc_test.go:405
        	            				rpc_test.go:430
        	Error:      	Expected value not to be nil.
        	Test:       	TestEth_GetFilterChanges_Topics_AB
        	Messages:   	transaction failed
--- FAIL: TestEth_GetFilterChanges_Topics_XB (13.56s)
    rpc_test.go:469:
        	Error Trace:	rpc_test.go:469
        	Error:      	Not equal:
        	            	expected: 1
        	            	actual  : 0
        	Test:       	TestEth_GetFilterChanges_Topics_XB
--- FAIL: TestEth_PendingTransactionFilter (23.59s)
    rpc_test.go:405:
        	Error Trace:	rpc_test.go:405
        	            				rpc_test.go:480
        	Error:      	Expected value not to be nil.
        	Test:       	TestEth_PendingTransactionFilter
        	Messages:   	transaction failed
FAIL
FAIL	github.com/tharsis/ethermint/tests/rpc	151.517s
FAIL

[jbowen93]

We should comment out the failing tests and add todo comments linking to the relevant issues. This will give us a base to work from to track regressions.