[booth] `pcs booth sync` is a misnomer, carries semantics of what would be expected with imaginary `pcs booth push`

[jnpkrn]

With synchronization, at least a weak notion of intelligence or
carefulness is expected (naturally absorbing user's worries).

Therefore it is rather inappropriate for sync to mean "enforce
my local version". That's not a synchronization, it's a dictate
that should rather labelled as push, as is customary in the field.

[tomjelinek]

Due to time constraints and other priorities, we haven't been able to implement these planned higher level booth commands which would be aware of the whole booth formation and which would be able to operate at a cluster level and booth formation level. For the users to be able to set booth at least somehow, only the node-level commands have been implemented. Those, even if not as comfortable as one may desire, provide a complete set of operations needed for configuring and managing booth.

The plans for the more comfortable booth management are still there. Unfortunately given current developer resources and backlog, it is a "blue-sky" project for now.