Auto-detect does not work for arm 32 builds

[smlambert]

See https://ci.adoptopenjdk.net/view/Test_grinder/job/Grinder/1267, think auto-detect does not work as the value of java.vm.name is unexpected.

01:47:02 AUTO_DETECT is set to true
01:47:02 /home/jenkins/workspace/Grinder/openjdkbinary/j2sdk-image/bin/java -cp ./bin/TestKitGen.jar org.openj9.envInfo.EnvDetector JavaInfo
01:47:02 System.getProperty('os.name')=Linux
01:47:02
01:47:02 System.getProperty('os.arch')=arm
01:47:02
01:47:02 System.getProperty('java.fullversion')=null
01:47:02
01:47:02 Cannot determine System.getProperty('os.arch')=arm
01:47:02
01:47:02 System.getProperty('java.vm.name')=OpenJDK Zero VM
01:47:02
01:47:02 run_configure.mk:29: recipe for target 'testconfig' failed
01:47:02 make: *** [testconfig] Error 1

[aahlenst]

@smlambert Is there a workaround? I just stumbled on this one.

[smlambert]

Yes, you can disable AUTO_DETECT and explicitly set SPEC / JDK_IMPL / JDK_VERSION to work-around until this is fixed.

So, if running locally:
export AUTO_DETECT=false
export SPEC= linux_arm
export JDK_IMPL=hotspot
export JDK_VERSION=8 // (or as appropriate)

---

or in Grinder, unset AUTO_DETECT and make sure to fill in PLATFORM/JDK_IMPL/JDK_VERSION explicitly

Also think it may be a relatively simple fix (#88) but do not have a machine on which to verify it.