Autogen: Generate also NIC drivers.

+ Disallowed -avf- (or -rdma-) as "template" suites.
 + GBP suite switched to DPDK driver in repo.
+ Each NIC has its own list of supported drivers, in Constants.
+ Updated tag expressions for daily jobs:
 + Feature, ipsec, memif, scale, srv6, tunnels, vhost and vts
   are tested only with vfio-pci.
 + Other (base, dot1q, dot1ad) tested with all drivers.
+ Setup actions currently depend on driver, generated.
 - The performance_rdma action is trivial for now.
 - Several tests fail, to be fixed later, e.g. by performance_rdma.
+ Reconf tests are also supported.
+ Added DRV_VFIO_PCI tags missing, mainly in density tests.
 - Vhost suites (density, reconf) are failing, but suites look good.
- TCP suites do not support NIC drivers yet.
- DPDK obviously not supported.
+ Use Python 3 in regenerate scripts.
+ Fix typos binded => bound.
+ File open modes set either u"rt" or u"wt" everywhere.
+ Remove a trailing space in an environment variable name.

Change-Id: I290470675dc5c9e88b2eaa5ab6285ecd9ed7827a
Signed-off-by: Vratko Polak <vrpolak@cisco.com>