Added node_status setter for StatusGrid.
Added node_status setter for StatusGrid.

RondaStrauch/landlab,RondaStrauch/landlab,Carralex/landlab,cmshobe/landlab,ManuSchmi88/landlab,SiccarPoint/landlab,csherwood-usgs/landlab,csherwood-usgs/landlab,Carralex/landlab,Carralex/landlab,SiccarPoint/landlab,landlab/landlab,landlab/landlab,landlab/landlab,ManuSchmi88/landlab,RondaStrauch/landlab,laijingtao/landlab,amandersillinois/landlab,decvalts/landlab,cmshobe/landlab,amandersillinois/landlab,decvalts/landlab,laijingtao/landlab,cmshobe/landlab,ManuSchmi88/landlab