Restore session worker in gas task tests

apps/cic-eth/cic_eth/eth/gas.py

@@ -183,7 +183,6 @@ def check_gas(self, tx_hashes_hex, chain_spec_dict, txs_hex=[], address=None, ga
         if not is_checksum_address(address):
             raise ValueError('invalid address {}'.format(address))
         address = tx_normalize.wallet_address(address)
-
         address = add_0x(address)
 
     tx_hashes = []

apps/cic-eth/tests/task/test_task_gas.py

@@ -75,7 +75,7 @@ def test_task_check_gas_ok(
             'cic_eth.eth.gas.check_gas',
             [
                 [
-                    tx_hash_hex,
+                    strip_0x(tx_hash_hex),
                     ],
                 default_chain_spec.asdict(),
                 [],
@@ -283,4 +283,3 @@ def test_task_resend_explicit(
     tx_after = unpack(bytes.fromhex(strip_0x(otx.signed_tx)), default_chain_spec)
     logg.debug('gasprices before {} after {}'.format(tx_before['gasPrice'], tx_after['gasPrice']))
     assert tx_after['gasPrice'] > tx_before['gasPrice']
-