Problem: integration test don't verify app hash between block-stm and

sequential

Solution:
- only enable block-stm on one of the node, try to detect potencial app
  hash mismatch

integration_tests/configs/default.jsonnet

@@ -26,9 +26,7 @@
  mempool: {
  'max-txs': 1000,
  },
- evm: {
- 'block-executor': 'block-stm',
- },
+
  },
  validators: [{
  coins: '1000000000000000000stake,10000000000000000000000basetcro',
@@ -46,6 +44,9 @@
  versiondb: {
  enable: true,
  },
+ evm: {
+ 'block-executor': 'block-stm',
+ },
  },
  }, {
  coins: '1000000000000000000stake,10000000000000000000000basetcro',