Dedupe compatible_sled_cpu_families across {Instance,Vmm}CpuPlatform - #11697

control: job assigned to worker 01M6HYQ554X270TJ12W93QBAR0 [factory aws, i-0b3c40d1659d4450e] (queued for 50 s)
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task: starting task 0: "setup"
task: process exited: duration 4128 ms, exit code 0
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task: starting task 1: "rust-toolchain"
task: process exited: duration 18274 ms, exit code 0
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task: starting task 2: "authentication"
task: process exited: duration 4174 ms, exit code 0
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task: starting task 3: "clone repository"
task: process exited: duration 20998 ms, exit code 0
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task: starting task 4: "build"
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| info: running `cargo check --bins` on zone-setup (372/372)
| warning: profile package spec `blake2b_simd` in profile `dev` did not match any packages
| warning: profile package spec `rust-argon2` in profile `dev` did not match any packages
|     Checking uzers v0.12.2
|     Checking zone-setup v0.1.0 (/work/oxidecomputer/omicron/zone-setup)
|     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.54s
| 
| real    12:31.290930818
| user    19:32.471021253
| sys      4:12.473431107
| trap        0.333699535
| tflt        0.572074432
| dflt        0.834998451
| kflt        0.008138622
| lock  1:00:25.483251098
| slp   1:32:45.942583984
| lat        41.793444073
| stop     3:25.011481209
task: process exited: duration 891503 ms, exit code 0
|W| found 0 output files