Split templates and tests in scenario tests

- Added subdirectory "templates" for storing all templates used in
  scenario tests.
- Added parameter sub_dir for method _load_template.
- Inline template was moved in templates directory from
  test_neutron_autoscaling.

Change-Id: I1acaf1ccc1466cf7ffc2e004eff486f49f4b5928
8 files changed
tree: 3ed272fbcf09688a5ff42b014a33c8f344eaefd8
  1. common/
  2. functional/
  3. scenario/