go/registry: Add MinWriteReplication to runtime storage parameters

[kostko]

Fixes #1821

TODO

• Commitment pool tests.
• Registry tests.
• Update storage client to only wait for MinWriteReplication writes.

[codecov]

Codecov Report

Merging #3021 into master will increase coverage by 0.16%.
The diff coverage is 78.44%.

@@            Coverage Diff             @@
##           master    #3021      +/-   ##
==========================================
+ Coverage   68.41%   68.57%   +0.16%     
==========================================
  Files         367      367              
  Lines       36143    36213      +70     
==========================================
+ Hits        24726    24834     +108     
+ Misses       8240     8193      -47     
- Partials     3177     3186       +9     

Impacted Files	Coverage Δ
go/registry/api/runtime.go	49.47% <ø> (ø)
go/worker/compute/executor/committee/node.go	64.59% <46.66%> (-0.69%)	⬇️
go/runtime/registry/registry.go	73.49% <50.00%> (-2.67%)	⬇️
go/storage/init.go	82.97% <71.42%> (-0.36%)	⬇️
go/storage/client/client.go	76.17% <80.00%> (-0.93%)	⬇️
go/worker/storage/committee/node.go	70.26% <93.33%> (-2.88%)	⬇️
go/oasis-node/cmd/registry/runtime/runtime.go	58.99% <100.00%> (+0.24%)	⬆️
go/registry/api/api.go	41.65% <100.00%> (+1.19%)	⬆️
go/registry/tests/tester.go	91.68% <100.00%> (+0.08%)	⬆️
go/roothash/api/commitment/pool.go	73.78% <100.00%> (+4.40%)	⬆️
... and 54 more

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