message: increase BiCGSTAB test tolerances
diff: @@ -334,8 +334,8 @@ TEST_F(Bicgstab, BicgstabApplyOneRHSIsEquivalentToRef)
  ref_solver->apply(b.get(), x.get());
  exec_solver->apply(d_b.get(), d_x.get());
  - GKO_ASSERT_MTX_NEAR(d_b, b, ::r<value_type>::value * 100);
  - GKO_ASSERT_MTX_NEAR(d_x, x, ::r<value_type>::value * 100);
  + GKO_ASSERT_MTX_NEAR(d_b, b, ::r<value_type>::value * 500);
  + GKO_ASSERT_MTX_NEAR(d_x, x, ::r<value_type>::value * 500);
  }
  @@ -355,8 +355,8 @@ TEST_F(Bicgstab, BicgstabApplyMultipleRHSIsEquivalentToRef)
  ref_solver->apply(b.get(), x.get());
  exec_solver->apply(d_b.get(), d_x.get());
  - GKO_ASSERT_MTX_NEAR(d_b, b, ::r<value_type>::value * 100);
  - GKO_ASSERT_MTX_NEAR(d_x, x, ::r<value_type>::value * 100);
  + GKO_ASSERT_MTX_NEAR(d_b, b, ::r<value_type>::value * 500);
  + GKO_ASSERT_MTX_NEAR(d_x, x, ::r<value_type>::value * 500);
  }
  