Using update-alternatives from dpkg to set Java version on Mac agent node

[jordarlu]

Description

We are going to use update-alternatives from dpkg to set Java version on Mac agent node

Issues Resolved

opensearch-project/opensearch-build#4272

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[jordarlu]

Tested on staging enviroment with 3.0.0 (Java21) and build 1.3.15 (Java11), they both looked successful :

build 3.0.0

Current Java version
[Pipeline] sh
+ java -version
openjdk version "11.0.21" 2023-10-17
OpenJDK Runtime Environment Temurin-11.0.21+9 (build 11.0.21+9)
OpenJDK 64-Bit Server VM Temurin-11.0.21+9 (build 11.0.21+9, mixed mode)
[Pipeline] echo
Switching to Java 21 on MacOS
[Pipeline] sh
++ update-alternatives --list java
++ grep openjdk-21
+ update-alternatives --set java /opt/java/openjdk-21/Contents/Home/bin/java
update-alternatives: using /opt/java/openjdk-21/Contents/Home/bin/java to provide /usr/local/bin/java (java) in manual mode
[Pipeline] sh
+ java -version
openjdk version "21.0.1" 2023-10-17 LTS
OpenJDK Runtime Environment Temurin-21.0.1+12 (build 21.0.1+12-LTS)
OpenJDK 64-Bit Server VM Temurin-21.0.1+12 (build 21.0.1+12-LTS, mixed mode)
[Pipeline] }
[Pipeline] // script

build 1.3.15

Current Java version
[Pipeline] sh
+ java -version
openjdk version "21.0.1" 2023-10-17 LTS
OpenJDK Runtime Environment Temurin-21.0.1+12 (build 21.0.1+12-LTS)
OpenJDK 64-Bit Server VM Temurin-21.0.1+12 (build 21.0.1+12-LTS, mixed mode)
[Pipeline] echo
Switching to Java 11 on MacOS
[Pipeline] sh
++ update-alternatives --list java
++ grep openjdk-11
+ update-alternatives --set java /opt/java/openjdk-11/Contents/Home/bin/java
update-alternatives: using /opt/java/openjdk-11/Contents/Home/bin/java to provide /usr/local/bin/java (java) in manual mode
[Pipeline] sh
+ java -version
openjdk version "11.0.21" 2023-10-17
OpenJDK Runtime Environment Temurin-11.0.21+9 (build 11.0.21+9)
OpenJDK 64-Bit Server VM Temurin-11.0.21+9 (build 11.0.21+9, mixed mode)
[Pipeline] }
[Pipeline] // script

[peterzhuamazon]

Thanks @jordarlu , more comments here. Thanks!