Use focal release for travis ci

Author: jiangpengcheng

.travis.yml

@@ -16,7 +16,7 @@
 #
 
 os: linux
-dist: xenial
+dist: focal
 language: java
 jdk: openjdk11
 
@@ -54,6 +54,7 @@ cache:
     - $HOME/.gradle/wrapper/
 
 before_install:
+  - sudo systemctl stop epmd.socket epmd.service
   - ./tools/travis/docker.sh
   - sudo apt-get install -y python3-pip
   - pip install --user --upgrade pip setuptools six

tests/src/test/scala/org/apache/openwhisk/core/admin/WskAdminTests.scala

@@ -252,7 +252,8 @@ class WskAdminTests extends TestHelpers with WskActorSystem with Matchers with B
       // check correctly set
       val lines = wskadmin.cli(Seq("limits", "get", subject)).stdout.linesIterator.toSeq
       lines should have size 1
-      lines(0) shouldBe "allowedKinds = [u'nodejs:10', u'blackbox']"
+      lines(0) should (be("allowedKinds = [u'nodejs:10', u'blackbox']") or be(
+        "allowedKinds = ['nodejs:10', 'blackbox']"))
     } finally {
       wskadmin.cli(Seq("limits", "delete", subject)).stdout should include("Limits deleted")
     }

tools/travis/runStandaloneTests.sh

@@ -46,6 +46,7 @@ kubectl config set-context --current --namespace=default
 
 # This is required because it is timed out to pull the image during the test.
 docker pull openwhisk/action-nodejs-v10:nightly
+docker pull openwhisk/dockerskeleton:nightly
 
 cd $ROOTDIR
 TERM=dumb ./gradlew :core:standalone:build \

tools/travis/scan.sh

@@ -41,7 +41,7 @@ cd $ROOTDIR
 TERM=dumb ./gradlew checkScalafmtAll
 
 # lint tests to all be actually runnable
-MISSING_TESTS=$(grep -rL "RunWith" --include="*Tests.scala" tests)
+MISSING_TESTS=$(grep -rL "RunWith" --include="*Tests.scala" tests || true)
 if [ -n "$MISSING_TESTS" ]
 then
   echo "The following tests are missing the 'RunWith' annotation"

tools/travis/setup.sh

@@ -34,7 +34,7 @@ function retry() {
 python -m pip install --user couchdb
 
 # Ansible
-python -m pip install --user ansible==2.5.2
+python -m pip install --user ansible==2.8.18
 
 # Azure CosmosDB
 python -m pip install --user pydocumentdb

tools/travis/setupSystem.sh

@@ -24,6 +24,9 @@ SCRIPTDIR=$(cd $(dirname "$0") && pwd)
 ROOTDIR="$SCRIPTDIR/../.."
 RUNTIMES_MANIFEST=${1:-"/ansible/files/runtimes.json"}
 
+# This is required because it is timed out to pull the image during the test.
+docker pull openwhisk/example
+
 cd $ROOTDIR/ansible
 
 $ANSIBLE_CMD openwhisk.yml -e manifest_file="$RUNTIMES_MANIFEST" -e db_activation_backend=ElasticSearch