Set system.dev with additional label and vendors info

[sophia-guo]

Fix issues mentioned in adoptium/temurin-build#3587

[github-actions]

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[karianna]

/github/workspace/pipelines/build/common/openjdk_build_pipeline.groovy
401 error The current scope already contains a variable of the name vendorTestBranches
@ line 401, column 33. NglParseError
402 error The current scope already contains a variable of the name vendorTestRepos
@ line 402, column 33. NglParseError

[sophia-guo]

Updated @karianna

[smlambert]

Now #929 is merged, this can come in, needs a rebase @sophia-guo

[sophia-guo]

Didn't realize that this PR is not merged until I noticed the issue with https://ci.adoptium.net/job/Test_openjdk23_hs_dev.system_x86-64_linux/3/.

Rebased.