As a keptn developer, I can automatically set up a demo environment

[dirkwall]

We have an on-demand dedicated demo environment, where that latest features and overall use cases can be demonstrated. This environment can also be used for sprint reviews and community meetings.

Acceptance criteria

• Given I'm a person that gives a demo
  When I get a fresh Kubernetes cluster
  Then I want to be able to install keptn including all core components automatically

[agrimmer]

During the night, a travis cron job sets up a new environment and installs keptn in the version of the dev-branch.

Refinement of Then: keptn is automatically installed by the travis cron job

[agrimmer]

Completed:

• Setup of a nightly-cluster using keptn in version 0.2.1. This cluster is re-created on a daily basis using a Travis cron job.
• End-to-end tests verify the functionality

Missing due to dependencies on issue #327:

• The nightly cluster should be set up using the versions contained in the dev-branches of the core components.
• Extend end-to-end tests: (1) test which pushes an artifact into dev, staging and prod, (2) test with quality gates in place
• Rename scripts: Currently, the scripts are named 'pr_main' and 'master_main'. These names are misleading.

[dirkwall]

Closing this issue. Missing tasks are transferred to #337