chore: use large timeout value for integration test

[quake]

Change all waiting_for_sync timeout value to 60 seconds, resolve integration test fail issue on poor CI server.

[nervos-bot]

@yangby-cryptape is assigned as the chief reviewer

[chaoticlonghair]

In this version, some tests wait 60 secs for 5 height, and some tests wait 60 secs for 2 height, it seems not fair.

IMHO, a more flexible solution is: check if there is anything changed in a small interval.

Didn't reach the target? That's OK, if there is some changes in each interval, it means the program is still alive.

[codecov]

Codecov Report

Merging #954 into develop will not change coverage.
The diff coverage is 0%.

@@           Coverage Diff           @@
##           develop    #954   +/-   ##
=======================================
  Coverage     57.7%   57.7%           
=======================================
  Files          171     171           
  Lines        17230   17230           
=======================================
  Hits          9942    9942           
  Misses        7288    7288

Impacted Files	Coverage Δ
test/src/node.rs	0% <0%> (ø)	⬆️
test/src/specs/tx_pool/pool_reconcile.rs	0% <0%> (ø)	⬆️
test/src/specs/sync/chain_forks.rs	0% <0%> (ø)	⬆️
test/src/net.rs	0% <0%> (ø)	⬆️
test/src/specs/relay/compact_block.rs	0% <0%> (ø)	⬆️
test/src/specs/relay/transaction_relay.rs	0% <0%> (ø)	⬆️
test/src/specs/tx_pool/pool_resurrect.rs	0% <0%> (ø)	⬆️
test/src/specs/sync/sync_timeout.rs	0% <0%> (ø)	⬆️

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