Modify build files for coverage and sonar analysis

.github/workflows/build.yml

@@ -0,0 +1,37 @@
+name: Build
+on:
+  push:
+    branches:
+      - master
+  workflow_dispatch:
+jobs:
+  build:
+    name: Build
+    runs-on: ubuntu-20.04
+    steps:
+      - uses: actions/checkout@v2
+        with:
+          fetch-depth: 0  # Shallow clones should be disabled for a better relevancy of analysis
+      - name: Set up JDK 11
+        uses: actions/setup-java@v1
+        with:
+          java-version: 11
+      - name: Cache SonarCloud packages
+        uses: actions/cache@v1
+        with:
+          path: ~/.sonar/cache
+          key: ${{ runner.os }}-sonar
+          restore-keys: ${{ runner.os }}-sonar
+      - name: Cache Maven packages
+        uses: actions/cache@v1
+        with:
+          path: ~/.m2
+          key: ${{ runner.os }}-m2-${{ hashFiles('**/pom.xml') }}
+          restore-keys: ${{ runner.os }}-m2
+      - run: mvn -B verify org.sonarsource.scanner.maven:sonar-maven-plugin:sonar
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}  # Needed to get PR information, if any
+          SONAR_TOKEN: ${{ secrets.SONAR_TOKEN }}
+      - run: mvn clean clover:setup
+      - run: mvn test
+      - run: mvn clover:aggregate clover:clover 

pom.xml

@@ -683,7 +683,6 @@
           <configuration>
              <showWarnings>true</showWarnings>
              <compilerArgs>
-               <compilerArg>-Werror</compilerArg>
                <compilerArg>-Xlint:deprecation</compilerArg>
                <compilerArg>-Xlint:unchecked</compilerArg>
                <compilerArg>-Xlint:-options</compilerArg>