chore: update jre to 11 for linter (#1278)

.github/.OwlBot.lock.yaml

@@ -1,3 +1,3 @@
 docker:
   image: gcr.io/cloud-devrel-public-resources/owlbot-java:latest
-  digest: sha256:a3ac08d167454718ff057b97a1950d3cb5e16fc39fb3f355d90276285a6cac75
+  digest: sha256:14ecf64ec36f67c7bf04e3dc0f68eafcc01df3955121c38862b695e2ae7515d8

.github/workflows/ci.yaml

@@ -8,13 +8,11 @@ jobs:
   units:
     runs-on: ubuntu-latest
     strategy:
+      fail-fast: false
       matrix:
         java: [8, 11, 17]
     steps:
     - uses: actions/checkout@v2
-    - uses: stCarolas/setup-maven@v4
-      with:
-        maven-version: 3.8.1
     - uses: actions/setup-java@v2
       with:
         distribution: zulu
@@ -27,9 +25,6 @@ jobs:
     runs-on: windows-latest
     steps:
     - uses: actions/checkout@v2
-    - uses: stCarolas/setup-maven@v4
-      with:
-        maven-version: 3.8.1
     - uses: actions/setup-java@v2
       with:
         distribution: zulu
@@ -45,9 +40,6 @@ jobs:
         java: [8, 11, 17]
     steps:
     - uses: actions/checkout@v2
-    - uses: stCarolas/setup-maven@v4
-      with:
-        maven-version: 3.8.1
     - uses: actions/setup-java@v2
       with:
         distribution: zulu
@@ -58,13 +50,10 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v2
-    - uses: stCarolas/setup-maven@v4
-      with:
-        maven-version: 3.8.1
     - uses: actions/setup-java@v2
       with:
         distribution: zulu
-        java-version: 8
+        java-version: 11
     - run: java -version
     - run: .kokoro/build.sh
       env:
@@ -73,9 +62,6 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v2
-    - uses: stCarolas/setup-maven@v4
-      with:
-        maven-version: 3.8.1
     - uses: actions/setup-java@v2
       with:
         distribution: zulu

.kokoro/release/publish_javadoc11.sh

@@ -36,13 +36,9 @@ mvn clean install -B -q -DskipTests=true
 export NAME=google-cloud-redis
 export VERSION=$(grep ${NAME}: versions.txt | cut -d: -f3)
 
-# V3 generates docfx yml from javadoc
-# generate yml
-mvn clean site -B -q -P docFX
-
-# copy README to docfx-yml dir and rename index.md
-cp README.md target/docfx-yml/index.md
-# copy CHANGELOG to docfx-yml dir and rename history.md
+# cloud RAD generation
+mvn clean javadoc:aggregate -B -q -P docFX
+# include CHANGELOG
 cp CHANGELOG.md target/docfx-yml/history.md
 
 pushd target/docfx-yml