Quagga: vrf_id not being set correctly

Quagga: vrf_id not being set correctly

Several routing protocols use the zapi_ipv[4|6] api to talk to
zebra.  There are some instances where the api.vrf_id was not
being set.  Since the practice is to declare the api structure
on the stack, the data inside is not being set to 0.  As
such random vrf_id values were being passed to zebrad
causing rage and confusion.

Ticket: CM-8287
Reviewed-by: CCR-3841
Testing:  Test suites no longer crashing and burning

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