adjust FD step size for scan eagle test

Changes in how OpenMDAO computes errors in check_totals required an adjustment in FD step size for more accurate derivative computation. Test passes now.

Author: kanekosh

tests/integration_tests/test_scaneagle.py

@@ -218,7 +218,7 @@ def test_totals(self):
         totals = self.prob.check_totals(
             method="fd",
             form="central",
-            step=5e-4,
+            step=1e-3,
             step_calc="rel",
             compact_print=True,
             abs_err_tol=1e-4,