runtime: Gofmt fixes

- Mostly blank lines after `+build` -- see
  https://pkg.go.dev/go/build@go1.14.15 -- this is, to date, enforced by
  `gofmt`.
- 1.17-style go:build directives are also added.
- Spaces in govmm/vmm_s390x.go

Fixes: #3769
Signed-off-by: Jakob Naucke <jakob.naucke@ibm.com>

src/runtime/virtcontainers/acrn.go

@@ -1,6 +1,6 @@
 //go:build linux
 // +build linux
-//
+
 // Copyright (c) 2019 Intel Corporation
 //
 // SPDX-License-Identifier: Apache-2.0

src/runtime/virtcontainers/acrn_arch_base.go

@@ -1,6 +1,6 @@
 //go:build linux
 // +build linux
-//
+
 // Copyright (c) 2019 Intel Corporation
 //
 // SPDX-License-Identifier: Apache-2.0

src/runtime/virtcontainers/acrn_test.go

@@ -1,6 +1,6 @@
 //go:build linux
 // +build linux
-//
+
 // Copyright (c) 2019 Intel Corporation
 //
 // SPDX-License-Identifier: Apache-2.0

src/runtime/virtcontainers/clh.go

@@ -1,7 +1,6 @@
 //go:build linux
 // +build linux
 
-//
 // Copyright (c) 2019 Ericsson Eurolab Deutschland GmbH
 //
 // SPDX-License-Identifier: Apache-2.0

src/runtime/virtcontainers/clh_test.go

@@ -1,6 +1,6 @@
 //go:build linux
 // +build linux
-//
+
 // Copyright (c) 2019 Ericsson Eurolab Deutschland G.m.b.H.
 //
 // SPDX-License-Identifier: Apache-2.0

src/runtime/virtcontainers/fc.go

@@ -1,7 +1,6 @@
 //go:build linux
 // +build linux
 
-//
 // Copyright (c) 2018 Intel Corporation
 //
 // SPDX-License-Identifier: Apache-2.0

src/runtime/virtcontainers/fc_metrics.go

@@ -1,6 +1,6 @@
 //go:build linux
 // +build linux
-//
+
 // Copyright (c) 2020 Ant Group
 //
 // SPDX-License-Identifier: Apache-2.0

src/runtime/virtcontainers/fc_test.go

@@ -1,6 +1,6 @@
 //go:build linux
 // +build linux
-//
+
 // Copyright (c) 2019 Intel Corporation
 //
 // SPDX-License-Identifier: Apache-2.0

src/runtime/virtcontainers/ipvlan_endpoint.go

@@ -1,5 +1,6 @@
+//go:build linux
 // +build linux
-//
+
 // Copyright (c) 2018 Intel Corporation
 //
 // SPDX-License-Identifier: Apache-2.0

src/runtime/virtcontainers/ipvlan_endpoint_test.go

@@ -1,5 +1,6 @@
+//go:build linux
 // +build linux
-//
+
 // Copyright (c) 2018 Intel Corporation
 //
 // SPDX-License-Identifier: Apache-2.0

src/runtime/virtcontainers/macvlan_endpoint.go

@@ -1,5 +1,6 @@
+//go:build linux
 // +build linux
-//
+
 // Copyright (c) 2018 Intel Corporation
 //
 // SPDX-License-Identifier: Apache-2.0

src/runtime/virtcontainers/macvlan_endpoint_test.go

@@ -1,5 +1,6 @@
+//go:build linux
 // +build linux
-//
+
 // Copyright (c) 2018 Intel Corporation
 //
 // SPDX-License-Identifier: Apache-2.0

src/runtime/virtcontainers/macvtap_endpoint.go

@@ -1,5 +1,6 @@
+//go:build linux
 // +build linux
-//
+
 // Copyright (c) 2018 Intel Corporation
 //
 // SPDX-License-Identifier: Apache-2.0

src/runtime/virtcontainers/macvtap_endpoint_test.go

@@ -1,5 +1,6 @@
+//go:build linux
 // +build linux
-//
+
 // Copyright (c) 2018 Intel Corporation
 //
 // SPDX-License-Identifier: Apache-2.0

src/runtime/virtcontainers/physical_endpoint.go

@@ -1,5 +1,6 @@
+//go:build linux
 // +build linux
-//
+
 // Copyright (c) 2018 Intel Corporation
 //
 // SPDX-License-Identifier: Apache-2.0

src/runtime/virtcontainers/physical_endpoint_test.go

@@ -1,5 +1,6 @@
+//go:build linux
 // +build linux
-//
+
 // Copyright (c) 2018 Intel Corporation
 //
 // SPDX-License-Identifier: Apache-2.0

src/runtime/virtcontainers/qemu.go

@@ -1,7 +1,6 @@
 //go:build linux
 // +build linux
 
-//
 // Copyright (c) 2016 Intel Corporation
 //
 // SPDX-License-Identifier: Apache-2.0

src/runtime/virtcontainers/qemu_amd64.go

@@ -1,6 +1,6 @@
 //go:build linux
 // +build linux
-//
+
 // Copyright (c) 2018 Intel Corporation
 //
 // SPDX-License-Identifier: Apache-2.0

src/runtime/virtcontainers/qemu_amd64_test.go

@@ -1,6 +1,6 @@
 //go:build linux
 // +build linux
-//
+
 // Copyright (c) 2018 Intel Corporation
 //
 // SPDX-License-Identifier: Apache-2.0

src/runtime/virtcontainers/qemu_arch_base.go

@@ -1,6 +1,6 @@
 //go:build linux
 // +build linux
-//
+
 // Copyright (c) 2018 Intel Corporation
 //
 // SPDX-License-Identifier: Apache-2.0

src/runtime/virtcontainers/qemu_arch_base_test.go

@@ -1,6 +1,6 @@
 //go:build linux
 // +build linux
-//
+
 // Copyright (c) 2018 Intel Corporation
 //
 // SPDX-License-Identifier: Apache-2.0

src/runtime/virtcontainers/qemu_arm64.go

@@ -1,6 +1,6 @@
 //go:build linux
 // +build linux
-//
+
 // Copyright (c) 2018 Intel Corporation
 //
 // SPDX-License-Identifier: Apache-2.0

src/runtime/virtcontainers/qemu_arm64_test.go

@@ -1,6 +1,6 @@
 //go:build linux
 // +build linux
-//
+
 // Copyright (c) 2018 IBM
 //
 // SPDX-License-Identifier: Apache-2.0

src/runtime/virtcontainers/qemu_ppc64le.go

@@ -1,6 +1,6 @@
 //go:build linux
 // +build linux
-//
+
 // Copyright (c) 2018 IBM
 //
 // SPDX-License-Identifier: Apache-2.0

src/runtime/virtcontainers/qemu_ppc64le_test.go

@@ -1,6 +1,6 @@
 //go:build linux
 // +build linux
-//
+
 // Copyright (c) 2018 IBM
 //
 // SPDX-License-Identifier: Apache-2.0

src/runtime/virtcontainers/qemu_s390x.go

@@ -1,6 +1,6 @@
 //go:build linux
 // +build linux
-//
+
 // Copyright (c) 2018 IBM
 //
 // SPDX-License-Identifier: Apache-2.0

src/runtime/virtcontainers/qemu_s390x_test.go

@@ -1,6 +1,6 @@
 //go:build linux
 // +build linux
-//
+
 // Copyright (c) 2018 IBM
 //
 // SPDX-License-Identifier: Apache-2.0

src/runtime/virtcontainers/qemu_test.go

@@ -1,6 +1,6 @@
 //go:build linux
 // +build linux
-//
+
 // Copyright (c) 2016 Intel Corporation
 //
 // SPDX-License-Identifier: Apache-2.0

src/runtime/virtcontainers/tap_endpoint.go

@@ -1,5 +1,6 @@
+//go:build linux
 // +build linux
-//
+
 // Copyright (c) 2018 Huawei Corporation
 //
 // SPDX-License-Identifier: Apache-2.0

src/runtime/virtcontainers/tuntap_endpoint.go

@@ -1,5 +1,6 @@
+//go:build linux
 // +build linux
-//
+
 // Copyright (c) 2018 Huawei Corporation
 // Copyright (c) 2019 Intel Corporation
 //

src/runtime/virtcontainers/veth_endpoint.go

@@ -1,5 +1,6 @@
+//go:build linux
 // +build linux
-//
+
 // Copyright (c) 2018 Intel Corporation
 //
 // SPDX-License-Identifier: Apache-2.0

src/runtime/virtcontainers/veth_endpoint_test.go

@@ -1,5 +1,6 @@
+//go:build linux
 // +build linux
-//
+
 // Copyright (c) 2018 Intel Corporation
 //
 // SPDX-License-Identifier: Apache-2.0

src/runtime/virtcontainers/vhostuser_endpoint.go

@@ -1,5 +1,6 @@
+//go:build linux
 // +build linux
-//
+
 // Copyright (c) 2018 Intel Corporation
 //
 // SPDX-License-Identifier: Apache-2.0

src/runtime/virtcontainers/vhostuser_endpoint_test.go

@@ -1,5 +1,6 @@
+//go:build linux
 // +build linux
-//
+
 // Copyright (c) 2018 Intel Corporation
 //
 // SPDX-License-Identifier: Apache-2.0