replace httest test server with net/http (#3990)

Merge pull request #3956 from rxinui/feat/3910

Merge pull request #3988 from ntnn/fix-mark_shard_unschedulable_then_schedulable_again-flake

Merge pull request #3987 from xrstf/uget-prometheus

De-flake unschedulable workspace test

Fix `make test-e2e WHAT=./test/a/b/c` passing WHAT to build

feature: Validate loopvar comment/removed the loopvar comment (#3921)

update to Prometheus 3 to have darwin/arm64 builds available

use µget to download Prometheus

Merge pull request #3984 from ntnn/fix-cache-flakes

Revert "Give API server wait.ForeverTestTimeout minutes to come up"

Use embeddedetcd.Server.Stopped

Bump embeddedetcd

Reset REST mapper on retry and log errors

Merge pull request #3985 from ntnn/enable-cli-suite