Integrate gitlab-ci/refactor_manifest-ci and 1 more

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Commit: seco-ne/yocto/infrastructure/gitlab-ci@6c3a8ff7

CI:package_release: Remove "GUF-" prefix from gitlab artifacts dir

BCS 746-000637

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Commit: seco-ne/yocto/infrastructure/gitlab-ci@d809d630

manifest-CI: Refactor manifest pipeline files

* Split up build and package steps in separate files
* Add additional comments
* Add log output

BCS 746-000637