lib: Restrict redistribution cli a bit

lib: Restrict redistribution cli a bit

The PBR and PIM daemons, needed the ability to connect
to zebra.  Unfortunately this connection also implied
an ability to redistribute to other valid protocols.

Add a additional hook to the route_types.pl script
to allow us to specify if the client type should
be redistributed at all.

Additionally cleanup the PIM code to not show up
as a protocol under the header for a 'show ip route'
command

Ticket: CM-20568
Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>