If ADMIN_TOOL_TYPE=fenix we run maintenance testing using Fenix
instead of sample implementation. Testing will build Fenix
Docker container from latest master and make configuration
according to controller host.
JIRA: DOCTOR-131
Change-Id: I84c566b7afc3c4e488aeed63b5cf5c75046d1427 Signed-off-by: Tomi Juvonen <tomi.juvonen@nokia.com>