[BB-853] Automatically activates first manually created AppServer for beta tester
This PR fixes a small bug while provisioning instances for beta testers: If an automatic provisioning fails and a new AppServer is spawned manually, the automatic activation e-mail is sent to the client but the AppServer is not marked as active. This PR automatically marks the first instance of a beta tester instance as active, regardless if it's created manually after the automatic provisioning fails.
Reviewers: @viadanna