test/e2e: increase validator tolerances (#6037)

(cherry picked from commit 5f88d6a)

test/e2e/tests/validator_test.go

@@ -77,11 +77,8 @@ func TestValidator_Propose(t *testing.T) {
 
 		require.False(t, proposeCount == 0 && expectCount > 0,
 			"node did not propose any blocks (expected %v)", expectCount)
-		if expectCount > 3 {
+		if expectCount > 5 {
 			require.GreaterOrEqual(t, proposeCount, 3, "validator didn't propose even 3 blocks")
-		} else {
-			require.Equal(t, proposeCount, expectCount, "validator missed proposing blocks (proposed %v, expected %v)",
-				proposeCount, expectCount)
 		}
 	})
 }
@@ -120,11 +117,8 @@ func TestValidator_Sign(t *testing.T) {
 
 		require.False(t, signCount == 0 && expectCount > 0,
 			"validator did not sign any blocks (expected %v)", expectCount)
-		if expectCount > 3 {
-			require.GreaterOrEqual(t, signCount, 3, "validator didn't sign even 3 blocks")
-		} else {
-			require.Equal(t, signCount, expectCount, "validator missed signing blocks (signed %v, expected %v)",
-				signCount, expectCount)
+		if expectCount > 7 {
+			require.GreaterOrEqual(t, signCount, 3, "validator didn't sign even 3 blocks (expected %v)", expectCount)
 		}
 	})
 }