Integrate meta-seconorth-distro/add-manifest-and-testdata-files-to-release-artifacts
Commit: seco-ne/yocto/layers/meta-seconorth-distro@a316e95e
Refactoring: remove DISTRO_IMAGES variable
DISTRO_IMAGES was passed to the CI package stage only to add the corresponding manifest and testdata.json files as well. Add these directly to DISTRO_RELEASE_ARTEFACTS and remove DISTRO_IMAGES variable.
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Commit: seco-ne/yocto/layers/meta-seconorth-distro@ba99e05b
Refactoring: remove DISTRO_INSTALL_SCRIPTS
This variable is not needed anywhere else, so we can use its value directly.
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Commit: seco-ne/yocto/layers/meta-seconorth-distro@1846382a
Refactoring: append to DISTRO_IMAGES for FNGSystem instead of redefining it
${IMAGE_LINK_NAME}.cpio.gz is part of DISTRO_IMAGES automatically due to its original definition in seconorth-distro.inc. Append ${IMAGE_LINK_NAME}.tgz to make clear that this is an addition compared to the Yocto build.