[PDF] check-jinja: Filter-out incompatible PDF/IA

[PDF] check-jinja: Filter-out incompatible PDF/IA

While checking all PDFs against all installers, some mandatory
requirements are sometimes not met:
- minimum cluster nodes (e.g. Apex requires 5 nodes, 1 PDF has 3);
- minimum interface count (e.g. Compass requires min 3 NICs, some
  PDFs only have two interfaces or less);

The added filter is far from ideal:
- node requirements are based on the latest (not highest) index
  used by the installer adapter to accomodate special handling of
  3-node cluster in Daisy templates;
- interface req is based on the average interfaces/node, with
  quite some margin - this is a very loose mechanism;

With this in, `check-jinja` has a return code of 0 (note that
yamllint failures of output files are not affecting the return code).

Change-Id: I43ade3567bf3026069ff93eca17abc212fab211c
Signed-off-by: Alexandru Avadanii <Alexandru.Avadanii@enea.com>