v20210326

• Add less and cif-utils ubuntu packages.
• Downgrade Julia to v1.0.5 and only install IJulia package.
• Add /etc/ssh/ssh_config.d/keepalive.conf and options reconnect,ServerAliveInterval=15,ServerAliveCountMax=3 to mount-farm to prevent disconnections.
• teichlab creates python env cloned from base (full) environment.