Nightly GitLab EE Kitchen Sink instance

We recently had a discussion with the various product area engineering team leads about our process, deliverables, regressions and overall release quality.

You can see notes from this here: https://docs.google.com/document/d/1hPtBZLcavF08R1R_rhovIU7VCeLr3tFco8Me2VNu5eY/edit

One item that came up with more thorough testing of features and changes during the review process. We are starting to do more of this with dev.gitlab.com, however many of the issues we are delivering are in EE and some also require more advanced configurations (such as LDAP, Geo, Jira integration etc...).

We wanted to get a nightly EE build deployed to a server similar to dev.gitlab.com that has a "kitchen sink" configuration. We could look to name this ee-dev.gitlab.com or whatever else if felt appropriate.

@joshlambert has recently had some experience in setting up something like this and could perhaps be of value to help with this?

Initially, we should certainly configure:

• LDAP (with sync)
• Geo + HA
• Jenkins

cc @stanhu