As we implemented "Lock Plugin Versions in Upstream openshift/jenkins" in JKNS-269, it seems that the image build still unpacks the downloaded plugins and check other dependencies.

This step could be skipped as we are now enforcing this check in `make plugins-list` and in the relevant ci test.

A possible solution has been explained here,

https://github.com/openshift/jenkins/pull/1384#issuecomment-1030257978

That could consists in adding a parameter to the `doDownload` function https://github.com/openshift/jenkins/blob/master/2/contrib/jenkins/install-plugins.sh#L194 

to allow transitive dependencies check or not; and then change the openshift ci job `image` to pass this argument, so while building in CI, we just donwload the plugins but we do check their dependencies.