Integrate gitlab-ci/PBB-32-flash-n-go-deploy-folder-no-suffix

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Commit: seco-ne/yocto/infrastructure/gitlab-ci@7bd78810

PBB-32 Fix suffix addition in FNGo pipeline for custom projects
 due to an issue in GitLab where escaped variables are not correctly
 passed to child pipelines, a workaround is required.
 As a result, we use raw variables.
 The DEFERRED_RELEASE_VERSION variable was introduced for this purpose.
 However, for custom builds, we have an additional place where we modify
 the DEFERRED_RELEASE_VERSION variable to add a suffix.
 Therefore, extra interim variables need to be added to handle the workaround
 and ensure we get the raw variable in the end.