PDF parsing support

PDF parsing support

- add new git submodule pointing to OPNFV Pharos;
- use Pharos 'generate_config.sh' to parse the PDF using the Fuel
  installer adapter and generate <pod_config.yml> dynamically;
- build <pod_config.yml> outside current git repo and sync separately
  to prevent sensitive data leak;
- add <pod1.yaml> PDF sample based on LF-POD2, should be used with
  'ci/deploy.sh -l local -p pod1';

Change-Id: I4e1b95f180bcd5ade5d86f516628eb8edbe64b1c
Signed-off-by: Alexandru Avadanii <Alexandru.Avadanii@enea.com>
(cherry picked from commit 36e4b9754dedef27637c09b510829f686bd469e4)