set skip_timeout_commit to true for tests

For the tests its better to not use the timeout_commit, and to wait for all the
votes, because otherwise we can end up with timing dependencies in the testing
code which can lead to nondeterministic failures. That was part of the reason
for this change originally.

consensus/reactor_test.go

@@ -150,11 +150,6 @@ func TestValidatorSetChanges(t *testing.T) {
 	nVals := 4
 	css := randConsensusNetWithPeers(nVals, nPeers, "consensus_val_set_changes_test", newMockTickerFunc(true), newPersistentDummy)
 
-	// otherwise, the test is failing with timeout error
-	for i := 0; i < nPeers; i++ {
-		css[i].timeoutParams.SkipCommit0 = true
-	}
-
 	reactors := make([]*ConsensusReactor, nPeers)
 	eventChans := make([]chan interface{}, nPeers)
 	for i := 0; i < nPeers; i++ {