runtime/metrics: time histogram sub-bucket ranges are off by a factor of two [1.17 backport]

[gopherbot]

@mknyszek requested issue #50732 to be considered for backport to the next 1.17 minor release.

@gopherbot Please open backport issues for Go 1.16 and Go 1.17.

This issues is not really possible to workaround because downstream users are supposed to take the reported bucketing for runtime/metrics histograms at face value, and they're currently just wrong. The fix is also very small, and very safe.

[gopherbot]

Change https://go.dev/cl/384621 mentions this issue: [release-branch.go1.17] runtime: simplify histogram buckets considerably

[mknyszek]

This CL has +2, so feel free to land once the cherry-pick is approved.

[mknyszek]

(Or let me know that the cherry-pick is not approved. :))

[dmitshur]

Approving per discussion in a release meeting. This backport applies to both 1.17 and 1.16.

[gopherbot]

Closed by merging 1ba25fa to release-branch.go1.17.