Polish "Add Java 16 CI pipeline"

See gh-25519

ci/images/setup.sh

@@ -27,6 +27,7 @@ test -f /opt/openjdk/bin/java
 test -f /opt/openjdk/bin/javac
 
 if [[ $# -eq 2 ]]; then
+	cd /
 	TOOLCHAIN_JDK_URL=$( ./get-jdk-url.sh $2 )
 
 	mkdir -p /opt/openjdk-toolchain

ci/pipeline.yml

@@ -457,7 +457,14 @@ jobs:
     - do:
       - task: build-project
         image: ci-image-jdk16
-        <<: *build-project-task-params
+        privileged: true
+        timeout: ((task-timeout))
+        file: git-repo/ci/tasks/build-project.yml
+        params:
+          BRANCH: ((branch))
+          TOOLCHAIN_JAVA_VERSION: 16
+          <<: *gradle-enterprise-task-params
+          <<: *docker-hub-task-params
       on_failure:
         do:
           - put: repo-status-jdk16-build

ci/scripts/build-project.sh

@@ -6,8 +6,7 @@ repository=$(pwd)/distribution-repository
 
 pushd git-repo > /dev/null
 if [[ -d /opt/openjdk-toolchain ]]; then
-  toolchain_java_version=$( ./$(dirname $0)/get-toolchain-java-version.sh )
-  ./gradlew -Dorg.gradle.internal.launcher.welcomeMessageEnabled=false --no-daemon --max-workers=4 -PdeploymentRepository=${repository} build publishAllPublicationsToDeploymentRepository -PtoolchainVersion=${toolchain_java_version} -Porg.gradle.java.installations.auto-detect=false -Porg.gradle.java.installations.auto-download=false -Porg.gradle.java.installations.paths=/opt/openjdk-toolchain/
+  ./gradlew -Dorg.gradle.internal.launcher.welcomeMessageEnabled=false --no-daemon --max-workers=4 -PdeploymentRepository=${repository} build publishAllPublicationsToDeploymentRepository -PtoolchainVersion=${TOOLCHAIN_JAVA_VERSION} -Porg.gradle.java.installations.auto-detect=false -Porg.gradle.java.installations.auto-download=false -Porg.gradle.java.installations.paths=/opt/openjdk-toolchain/
 else
   ./gradlew -Dorg.gradle.internal.launcher.welcomeMessageEnabled=false --no-daemon --max-workers=4 -PdeploymentRepository=${repository} build publishAllPublicationsToDeploymentRepository
 fi

ci/scripts/get-toolchain-java-version.sh

@@ -1,4 +0,0 @@
-#!/bin/bash
-set -e
-
-/opt/openjdk-toolchain/bin/java -XshowSettings:properties -version 2>&1 | grep "java.specification.version" | awk '{split($0,parts,"="); print parts[2]}' | awk '{$1=$1;print}'