[EnOS][cli] Mandatory tasks' kwargs must be explicit

[jrbalderrama]

In some tasks (not exaustive list):

• destroy with option --hard
• up with option --force-deploy
• backup with option --backup_dir

if those options are not explicit an exception is raised.

[msimonin]

We should transform these into arguments of tasks or mandatory kwargs. This should be explicit.

[Marie-Donnie]

tc can also be added to the non exhaustive list :)