PDF: Add result summary to check-jinja2

PDF: Add result summary to check-jinja2

Apart from Pod Descritpro Files for OPNFV PODs, also validate the Pharos
PDF template itself. While at it, fix shellcheck warnings.

Sample output:

| PDF/Installer            | apex  | compass4nfv  | daisy  | joid  |
| pharos/config/pod1.yaml  | 1/1   | 12/12        | 1/1    | 1/1   |
| intel/pod18.yaml         | 1/1   | 12/12        | 1/1    | 1/1   |
| orange/pod1.yaml         | 0/1   | 4/12         | 0/1    | 0/1   |
| arm/pod5.yaml            | 1/1   | 12/12        | 1/1    | 1/1   |
| ericsson/pod1.yaml       | 1/1   | 12/12        | 1/1    | 1/1   |
| ericsson/pod2.yaml       | 1/1   | 12/12        | 1/1    | 1/1   |
| lf/pod4.yaml             | 1/1   | 12/12        | 1/1    | 1/1   |
| zte/pod3.yaml            | 1/1   | 12/12        | 1/1    | 1/1   |
| zte/pod1.yaml            | 1/1   | 12/12        | 1/1    | 1/1   |
| zte/pod2.yaml            | 1/1   | 12/12        | 1/1    | 1/1   |

Change-Id: Iba46a7cc62c80ccb987879ce94ffe5f0bbb23304
Signed-off-by: Alexandru Avadanii <Alexandru.Avadanii@enea.com>
(cherry picked from commit 5555a6edb45683270a8f2935cd9aa845457e9bc7)