Add only templates and environment files to default plan

[Florian Fuchs]

ABANDONED in favor of: https://bugs.launchpad.net/tripleo/+bug/1613286

When creating a default plan (e.g. through the `create_default_deployment_plan` workflow), all files contained in the local openstack-tripleo-heat-templates folder are added to the plan, even though some of them are neither templates or environment files, but rather utility scripts. This is problematic:

- It bloats the plan, since it contains unneeded files.
- If one of the py scripts contained in the folder is executed and a .pyc file is created, this file is added to the plan as well. As a consequence the plan cannot be (JSON-)serialized any more at a later stage.

[Julie Pichon (jpichon)]

I think we're moving away from using the tripleo-common tracker (see http://lists.openstack.org/pipermail/openstack-dev/2016-July/099484.html ), you probably want to move this to the main tripleo tracker for additional visibility.

[Florian Fuchs (flo-fuchs)]

Thanks Julie, I created a new report in tripleo.

[Julie Pichon (jpichon)]

Thank you! New bug at https://bugs.launchpad.net/tripleo/+bug/1613286