document the static mirror network and onionbalance system better
we have some documentation on the static mirroring system here:
https://help.torproject.org/tsa/howto/static-component/
it's mostly procedural and minimal: add a component, remove a component and that's it. it doesn't explain at all how the system works, how to create or remove a new node in the network, how onion services interact with it, and how it actually works in puppet.
all this should be better documented. for example, I should be able to resolve legacy/trac#34396 (moved) without asking weasel. :)
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