Lock down Nodejs version in sles build container

While doing https://gitlab.com/gitlab-org/gitlab-omnibus-builder/merge_requests/53 I've noticed that the node version in SLES container is free roaming and it is already one minor version up compared to the rest of build containers.

We need to find a way to lock this down to be at minimum the same Major.Minor version to avoid surprises that could now really block the release.

/cc @gitlab-build-team

Why won't the prebuilt binary (the one we use for other OSs, including OpenSUSE) work on SLES? Or is this a case of "trivial enough, but someone has to do it" ?

assigned to @WarheadsSE

This was an oversight. The included package should have been done similarly to the other distributions.

mentioned in merge request gitlab-omnibus-builder!54 (merged)

mentioned in issue #2573 (closed)

changed milestone to %9.4

Pending the above MR, this should cover the problems @marin experiences with character encoding on the last build as well, https://gitlab.com/gitlab-org/omnibus-gitlab/issues/2573

@marin moved this to the 9.4 Milestone, as this and #2573 (closed) need to be combined.

They should not, however, result in a commit here, AFAICT