Fix pydap test
Fix pydap test

kjordahl/xray,shoyer/xray,rabernat/xray,clarkfitzg/xray,cpaulik/xray,kjordahl/xray,jhamman/xray,shoyer/xarray,pydata/xarray,hetland/xray,NicWayand/xray,rabernat/xray,clarkfitzg/xray,cpaulik/xray,jhamman/xarray,markelg/xray,jcmgray/xarray,xray/xray,petercable/xray,pydata/xarray,drewokane/xray,markelg/xray,shoyer/xarray,jhamman/xarray,chunweiyuan/xarray,markelg/xray,hetland/xray,jhamman/xarray,pydata/xarray