Write an ADR about network properties and etcd (#1852) #7187

Job	Run time
Build & test (hydra-plutus)	1m 21s
Build & test (hydra-tx)	2m 2s
Build & test (hydra-chain-observer)	1m 12s
Build haddock using nix	1m 1s
Build & test (hydra-node)	7m 48s
Build & test (hydra-tui)	3m 6s
Build & test (hydra-cluster)	11m 32s
nix flake check	4m 10s
Benchmarks (hydra-node, tx-cost, --output-directory $(pwd)/../benchmarks)	2m 10s
Benchmarks (hydra-node, micro, -o $(pwd)/../benchmarks/ledger-bench.html)	1m 39s
Benchmarks (hydra-cluster, bench-e2e, datasets datasets/1-node.json datasets/3-nodes.json --outpu...	4m 9s
Build specification using nix	1m 30s
Compute cost differences	0s
Publish benchmark results	0s
Documentation	2m 49s
	44m 29s

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