build: make "packet framework" optional

build: make "packet framework" optional

Add port, table and pipeline libraries - collectively often known as
the "packet framework" -  to the list of optional libraries, and
ensure tests can build with them disabled.

Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
Acked-by: Stephen Hemminger <stephen@networkplumber.org>
Acked-by: Morten Brørup <mb@smartsharesystems.com>
Acked-by: David Marchand <david.marchand@redhat.com>