Reverting the namespace move from the previous commit — mara's reason
is better than mine was.
I grouped it with swarm.peers and swarm.wireguard because the module
serves the swarm tier. But those two describe THE SWARM: who is in it,
how it is meshed. snapshotStore describes THIS HOST'S ROLE. On a
standalone store box the operator enables one service, and nesting it
under `swarm` implies they are configuring a swarm when they are not.
The swarm- prefix on the file and units stands: the name says which
tier the component serves, the option path says what you are turning
on. Those are different questions and they are allowed different
answers.
6a6266cd5e