tests: enable integration test run on windows as baseline #2295

Job	Run time
prepare	4s
binaries (darwin/amd64)	1m 0s
binaries (darwin/arm64)	1m 9s
binaries (linux/amd64)	2m 7s
binaries (linux/arm/v7)	2m 0s
binaries (linux/arm64)	2m 17s
binaries (linux/s390x)	2m 19s
binaries (linux/ppc64le)	2m 6s
binaries (linux/riscv64)	2m 19s
binaries (windows/amd64)	1m 12s
binaries (windows/arm64)	1m 12s
test / prepare	1m 38s
test / run (containerd, ./client ./cmd/buildctl ./worker/containerd ./solver ./frontend, integration)	7m 56s
test / run (containerd-rootless, ./client ./cmd/buildctl ./worker/containerd ./solver ./frontend, integr...	6m 31s
test / run (containerd-1.6, ./client ./cmd/buildctl ./worker/containerd ./solver ./frontend, integration)	6m 26s
test / run (containerd-snapshotter-stargz, ./client ./cmd/buildctl ./worker/containerd ./solver ./fronte...	6m 30s
test / run (oci, ./client ./cmd/buildctl ./worker/containerd ./solver ./frontend, integration)	5m 14s
test / run (oci-rootless, ./client ./cmd/buildctl ./worker/containerd ./solver ./frontend, integration)	5m 10s
test / run (oci-snapshotter-stargz, ./client ./cmd/buildctl ./worker/containerd ./solver ./frontend, int...	5m 40s
test / run (./..., 1, integration gateway)	3m 48s
test / run (./client, containerd, nydus, integration)	6m 25s
test / run (./client, oci, nydus, integration)	4m 58s
test / run (./..., nydus, 1, integration)	3m 50s
image	1s
release	1s
	1h 21m 53s

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