dpdk: Convert dpdk-lcore-mask to DPDK lcore args.

dpdk: Convert dpdk-lcore-mask to DPDK lcore args.

OVS currently uses other_config:dpdk-lcore-mask <coremask> directly
in DPDK rte_eal_init() with '-c <coremask>' argument.

'-c' argument is now deprecated from DPDK and will be removed in
DPDK 25.11, so OVS will no longer be able to use the '-c <coremask>'
argument.

Convert dpdk-lcore-mask core mask to a core list that can be used with
'--lcores' and add some tests.

The core list is validated to prevent invalid cores being passed to
DPDK rte_eal_init().

Using the '--lcores' argument also adds compatibility for using a core
in the core mask that is greater than the max lcore, similar to commit
fe53b478f86e ("dpdk: Fix main lcore on systems with many cores.")

Signed-off-by: Kevin Traynor <ktraynor@redhat.com>
Acked-by: Eelco Chaudron <echaudro@redhat.com>
Reviewed-by: David Marchand <david.marchand@redhat.com>