packaging-vagrant-matrix jobs failing after requiring JDK-14 for compilation

[dliappis]

A stream of vagrant based packaging jobs (pretty much all defined in the vagrant packaging matrix) are failing after JDK-14 became mandatory for compilation (#54696).

This can be noticed on the master and 7.6 branches at least.

Examples:

• #master/ubuntu-18.04
  https://elasticsearch-ci.elastic.co/job/elastic+elasticsearch+master+packaging-vagrant-matrix/OS=ubuntu-1804,nodes=metal/30/console / https://gradle-enterprise.elastic.co/s/wnqreurvzqqtk

• #master/centos-7
  https://elasticsearch-ci.elastic.co/job/elastic+elasticsearch+master+packaging-vagrant-matrix/OS=centos-7,nodes=metal/30/console / https://gradle-enterprise.elastic.co/s/2ysfcusce7aos

• #master/fedora-29
  https://elasticsearch-ci.elastic.co/job/elastic+elasticsearch+master+packaging-vagrant-matrix/OS=fedora-29,nodes=metal/30/console / https://gradle-enterprise.elastic.co/s/6s74vnnhfvipe

The vagrant command shows that the first element in PATH is still set to JAVA-13:

INFO vagrant: `vagrant` invoked: ["ssh", "centos-7", "--command", "sudo bash -c '\npwd\ncd /elasticsearch/\nexport SYSTEM_JAVA_HOME=/elasticsearch/build/jdks/openjdk-11.0.2_linux_x64\nexport PATH=/elasticsearch/build/jdks/openjdk-13.0.1_linux_x64/bin:$PATH\nexport JOB_NAME=elastic+elasticsearch+master+packaging-vagrant-matrix/OS=centos-7,nodes=metal\nexport JENKINS_URL=https://elasticsearch-ci.elastic.co/\nexport BUILD_NUMBER=30\nexport BUILD_URL=https://elasticsearch-ci.elastic.co/job/elastic+elasticsearch+master+packaging-vagrant-matrix/OS=centos-7,nodes=metal/30/\n./gradlew destructiveDistroTest.default-linux-archive --project-cache-dir /elasticsearch/qa/os/centos-7/build/gradle-cache -S --parallel -D'org.gradle.logging.level'=LIFECYCLE -D'tests.inVM'\n'"]

which is odd because on the underlying bare metal host ~/.java does contain ~/.java/openjdk14/ referenced by:

elasticsearch/.ci/java-versions.properties

Lines 7 to 8 in 201adaf

	ES_BUILD_JAVA=openjdk14
	ES_RUNTIME_JAVA=openjdk11

which ought to be properly specified in BUILD_JAVA_HOME:

elasticsearch/.ci/os.sh

Line 27 in 201adaf

BUILD_JAVA_HOME=$HOME/.java/$ES_BUILD_JAVA

ultimately referenced in:

elasticsearch/.ci/os.sh

Lines 77 to 83 in 201adaf

	sudo -E env \
	PATH=$BUILD_JAVA_HOME/bin:`sudo bash -c 'echo -n $PATH'` \
	RUNTIME_JAVA_HOME=`readlink -f -n $RUNTIME_JAVA_HOME` \
	--unset=JAVA_HOME \
	SYSTEM_JAVA_HOME=`readlink -f -n $RUNTIME_JAVA_HOME` \
	./gradlew -g $HOME/.gradle --scan --parallel --continue $@

[elasticmachine]

Pinging @elastic/es-core-infra (:Core/Infra/Packaging)

[rjernst]

This needs to be updated in DistroTestPlugin.GRADLE_JDK_VERSION