app/testpmd: check vlan filter configuration

app/testpmd: check vlan filter configuration

This patch modifies testpmd behavior when setting:
rx_vlan add all vf_port (enabling all vlanids
to be passed thru rx filter on VF).
Rx_vlan_all_filter_set() function,
checks if the next vlanid can be enabled by the driver.
Number of vlanids is limited by the NIC and thus the NIC
do not allow to enable more vlanids than it can allocate
in VFTA table.

Signed-off-by: Michal Jastrzebski <michalx.k.jastrzebski@intel.com>
Acked-by: Pablo de Lara <pablo.de.lara.guarch@intel.com>