Make the vision solver use a less strict problem.

Solve a 4 point with distance to lines and use if the 8 point problem
isn't solvable.

Change-Id: Ie0e4f5983b35cbe2fc64af8230c7e1e1cbd53aaa
diff --git a/y2019/vision/target_finder.h b/y2019/vision/target_finder.h
index ebae3b4..0de5ad1 100644
--- a/y2019/vision/target_finder.h
+++ b/y2019/vision/target_finder.h
@@ -53,7 +53,8 @@
   IntermediateResult ProcessTargetToResult(const Target &target, bool verbose);
 
   std::vector<IntermediateResult> FilterResults(
-      const std::vector<IntermediateResult> &results, uint64_t print_rate);
+      const std::vector<IntermediateResult> &results, uint64_t print_rate,
+      bool verbose);
 
   // Get the local overlay for debug if we are doing that.
   aos::vision::PixelLinesOverlay *GetOverlay() { return &overlay_; }