upgrade: fix failing task in multi-node environment
upgrade: fix failing task in multi-node environment

The 'crontab -r' is failing on the other node and prevent the upgrade to
complete properly

Change-Id: I5e99029764882eee541efc315f037d1cce7ff712

enovance/software-factory,enovance/software-factory,enovance/software-factory,enovance/software-factory,enovance/software-factory