Devspace landing page

[joshmoore]

A user coming to a devspace must currently know a number of URLs (possibly with varying ports) that can be confusing. A single landing page could be generated with the necessary information.

[sbesson]

Since at least one dynamic port (probably the nginxjenkins 443 one) will need to be known, one possibility I can think of would be to generate a Jenkins user content readme/landing page i.e. https://$DOCKERHOST:$JENKINSPORT/userContent

[jburel]

I have updated the readme with the various informations and how to retrieve the ports
Also it is no longer necessary to go to infrastructure to run the playbooks