Azure: Check for REUSE compliance in the static analysis job

See https://reuse.software/dev/#ci.

Signed-off-by: Martin Nonnenmacher <[email protected]>

.azure-pipelines/LinuxAnalyzerTest.yml

@@ -59,8 +59,6 @@ jobs:
       echo "##vso[task.setvariable variable=path;]$PATH"
     displayName: Install Required Tools
 
-  # TODO: Add a step to run "reuse lint" (or maybe a separate job).
-
   # Clone repository.
   - checkout: self
     fetchDepth: 1

.azure-pipelines/StaticAnalysis.yml

@@ -33,6 +33,18 @@ jobs:
       jdkVersionOption: '1.11'
       gradleOptions: '-Xmx8192m'
 
+  - task: UsePythonVersion@0
+    displayName: Enable Python 3.6
+    inputs:
+      versionSpec: '3.6'
+      addToPath: true
+      architecture: 'x64'
+
+  - bash: |
+      pip install --user reuse
+      ~/.local/bin/reuse lint
+    displayName: Check REUSE Compliance
+
   # Ensure that any running Gradle daemon is stopped before caching starts.
   - bash: ./gradlew --stop
     displayName: Stop Gradle Daemon