Move server update after launching server

[vinistock]

Motivation

This PR is attempt to speed up launching the server by doing two things:

1. Moving the server update to after we finished booting. The update operation is very slow on large bundles, so if we can avoid doing it in the main launch path, we can boot significantly faster
2. Using bundle check and only running bundle install if absolutely necessary, which is also a bit faster

Moving the update after the server launches also reduces the surface area for Bundler issues to accidentally block booting the server.

Implementation

There are two commits:

1. Move the update to after the server launched
2. Started running bundle check and then only bundle installing when necessary

Note that this only impacts launcher mode.

Automated Tests

Updated our existing tests.

[vinistock]

• Move server update after launching server #3555 👈 (View in Graphite)
• main

---

How to use the Graphite Merge Queue

Add the label graphite-merge to this PR to add it to the merge queue.

You must have a Graphite account in order to use the merge queue. Sign up using this link.

An organization admin has enabled the Graphite Merge Queue in this repository.

Please do not merge from GitHub as this will restart CI on PRs being processed by the merge queue.

This stack of pull requests is managed by Graphite. Learn more about stacking.