Update dxclient SSH test applet to Ubuntu 20.04 (#678)
Update dxclient SSH test applet to Ubuntu 20.04 (#678)


dnanexus/dx-toolkit,dnanexus/dx-toolkit,dnanexus/dx-toolkit,dnanexus/dx-toolkit,dnanexus/dx-toolkit,dnanexus/dx-toolkit,dnanexus/dx-toolkit,dnanexus/dx-toolkit