Fix set attribute margin to use left margin

[alextychan]

The following is the merge request is the same as #681, but placed into a separate branch. @felix-ht, please have a look.

Attribution margins is inconsistent with how it is initialized and is not working as of this writing.

// In MapboxMapBuilder.java; It is initialized with left and bottom margins.
  @Override
  public void setAttributionButtonMargins(int x, int y) {
    options.attributionMargins(new int[] {
            (int) x, //left
            (int) 0, //top
            (int) 0, //right
            (int) y, //bottom
    });
  }

// In MapboxMapController.java
  @Override
  public void setAttributionButtonMargins(int x, int y) {
    mapboxMap.getUiSettings().setAttributionMargins(0, 0, x, y);
  }

Changes:

// In MapboxMapController.java
  @Override
  public void setAttributionButtonMargins(int x, int y) {
    // Use left margins as right margins doesn't work.
    mapboxMap.getUiSettings().setAttributionMargins(x, 0, 0, y); 
  }

[felix-ht]

@alextychan with this changes do the Attribution Margins behave the same on ios and android?

[alextychan]

@felix-ht as I do not own any iOS devices, I am unable to verify if iOS has the same issue. But I do know that it will work correctly or "as expected" after this change for Android.

[m0nac0]

Good spot! The fix works for me.

I think it's unlikely that a similar issue exists on iOS, but even if so, we can merge this and ticket iOS work out.