Switch license headers to SDPX format (onosproject#1555)

* Switch license headers to SDPX format

* Add reuse check to test build

* Add reuse check

* Use license target

.dockerignore

@@ -1,3 +1,7 @@
+# SPDX-FileCopyrightText: 2019-present Open Networking Foundation <[email protected]>
+#
+# SPDX-License-Identifier: Apache-2.0
+
 **/*.md
 **/LICENSE
 .git

.github/ISSUE_TEMPLATE/bug_report.md

@@ -1,3 +1,9 @@
+<!--
+SPDX-FileCopyrightText: 2019-present Open Networking Foundation <[email protected]>
+
+SPDX-License-Identifier: Apache-2.0
+-->
+
 ---
 name: Bug report
 about: Create a report to help us improve

.github/ISSUE_TEMPLATE/feature_request.md

@@ -1,3 +1,9 @@
+<!--
+SPDX-FileCopyrightText: 2019-present Open Networking Foundation <[email protected]>
+
+SPDX-License-Identifier: Apache-2.0
+-->
+
 ---
 name: Feature request
 about: Suggest an idea for this project

.gitignore

@@ -1,3 +1,7 @@
+# SPDX-FileCopyrightText: 2019-present Open Networking Foundation <[email protected]>
+#
+# SPDX-License-Identifier: Apache-2.0
+
 cmd/onos-config/onos-config
 cmd/southbound_main/southbound_main
 pkg/store/testout

.golangci.yml

@@ -1,3 +1,7 @@
+# SPDX-FileCopyrightText: 2019-present Open Networking Foundation <[email protected]>
+#
+# SPDX-License-Identifier: Apache-2.0
+
 run:
   # Autogenerated files take too much time and memory to load,
   # even if we skip them with -skip-dirs or -skip-dirs;

.reuse/dep5

@@ -0,0 +1,5 @@
+Format: https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
+
+Files: VERSION pkg/northbound/gnmi/test/mock* pkg/northbound/testdata/* pkg/southbound/testdata/* *.so *.gnmi *.png *.gif *.jpg go.mod go.sum
+Copyright: 2021 Open Networking Foundation
+License: Apache-2.0

CODE_OF_CONDUCT.md

@@ -1,3 +1,9 @@
+<!--
+SPDX-FileCopyrightText: 2019-present Open Networking Foundation <[email protected]>
+
+SPDX-License-Identifier: Apache-2.0
+-->
+
 We expect all ONF employees, member companies, and participants to abide by our [Code of Conduct](https://www.opennetworking.org/wp-content/themes/onf/img/onf-code-of-conduct.pdf).
 
 If you are being harassed, notice that someone else is being harassed, or have any other concerns involving someone’s welfare, please notify a member of the ONF team or email [[email protected]]([email protected]).