Integrate gitlab-ci/CI-variable-scope-for-CI_PARAM_IMAGE-and-more

--

Commit: seco-ne/yocto/infrastructure/gitlab-ci@c503a6d4

CI: pipeline yocto: Change scope of CI_PARAM_IMAGE, ... to fix fngsystem build

The variables CI_PARAM_IMAGE, CI_PARAM_DISTRO, CI_MACHINE have been
defined outside the job in the '.gitlab-ci.yml' file. This has a lower
precedence then variables defined inside the job, but it seems that
these variables are used in the scope of 'Trigger variables' when
available in the trigger job. These override the value set in the
template. As main results this made FNGSystem jobs build the normal
yocto.