change to local import of cts_model in ca/tests
change to local import of cts_model in ca/tests

amandersillinois/landlab,RondaStrauch/landlab,ManuSchmi88/landlab,ManuSchmi88/landlab,ManuSchmi88/landlab,RondaStrauch/landlab,cmshobe/landlab,RondaStrauch/landlab,Carralex/landlab,cmshobe/landlab,csherwood-usgs/landlab,cmshobe/landlab,landlab/landlab,landlab/landlab,Carralex/landlab,landlab/landlab,Carralex/landlab,amandersillinois/landlab,csherwood-usgs/landlab