ci(java): run dependency tests on Java 8 & 11 (#249)

* changes without context

        autosynth cannot find the source of changes triggered by earlier changes in this
        repository, or by version upgrades to tools such as linters.

* build: fix ignoredUnusedDeclaredDependencies configuation

* build: fix ignoredUnusedDeclaredDependencies configuation

Co-authored-by: Jeff Ching <chingor@google.com>

.github/workflows/ci.yaml

@@ -36,11 +36,14 @@ jobs:
         JOB_TYPE: test
   dependencies:
     runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        java: [8, 11]
     steps:
     - uses: actions/checkout@v2
     - uses: actions/setup-java@v1
       with:
-        java-version: 8
+        java-version: ${{matrix.java}}
     - run: java -version
     - run: .kokoro/dependencies.sh
   linkage-monitor:

.kokoro/dependencies.sh

@@ -41,8 +41,10 @@ echo "****************** DEPENDENCY LIST COMPLETENESS CHECK *******************"
 ## Run dependency list completeness check
 function completenessCheck() {
   # Output dep list with compile scope generated using the original pom
+  # Running mvn dependency:list on Java versions that support modules will also include the module of the dependency.
+  # This is stripped from the output as it is not present in the flattened pom.
   msg "Generating dependency list using original pom..."
-  mvn dependency:list -f pom.xml -Dsort=true | grep '\[INFO]    .*:.*:.*:.*:.*' | grep -v ':test$' >.org-list.txt
+  mvn dependency:list -f pom.xml -Dsort=true | grep '\[INFO]    .*:.*:.*:.*:.*' | sed -e s/\\s--\\smodule.*// | grep -v ':test$' >.org-list.txt
 
   # Output dep list generated using the flattened pom (test scope deps are ommitted)
   msg "Generating dependency list using flattened pom..."

pom.xml

@@ -185,7 +185,10 @@
           <groupId>org.apache.maven.plugins</groupId>
           <artifactId>maven-dependency-plugin</artifactId>
           <configuration>
-            <ignoredUnusedDeclaredDependencies>org.objenesis:objenesis</ignoredUnusedDeclaredDependencies>
+            <ignoredUnusedDeclaredDependencies>
+              <ignoredUnusedDeclaredDependency>org.objenesis:objenesis</ignoredUnusedDeclaredDependency>
+              <ignoredUnusedDeclaredDependency>javax.annotation:javax.annotation-api</ignoredUnusedDeclaredDependency>
+            </ignoredUnusedDeclaredDependencies>
           </configuration>
         </plugin>
       </plugins>

synth.metadata

@@ -4,7 +4,7 @@
       "git": {
         "name": ".",
         "remote": "https://github.com/googleapis/java-asset.git",
-        "sha": "0ff54327bffe1b7a74d822c78e90729f82a89956"
+        "sha": "c5777f91741b439c9396d50c778739fbab719551"
       }
     },
     {