- Allow the OvS daemon to run as non-root (bsc#987545)
- Add missing 'Conflicts' statements to all the subpackages as
required by the Factory review tools.

- Remove the ?_with_dpdk macro usage since this is not being set
without explicitly passing --with/--without during an OBS build.
This reverts back to using the %{with dpdk} style which is set
automatically based on %bcond_with* macros.

- Fix subpackage dependencies to not require the non-existent python
DPDK subpackages (bsc#986835). We do not provide DPDK versions of
the python bindings so nothing should depend on these subpackages.

- Update rpm groups, acronym forms.

- Multiple fixes for the openvswitch-dpdk package (bsc#985878)
* Rename main package name to openvswitch-dpdk
* Do not build the python and kmp packages since they do not
depend on the DPDK capabilities
* Remove the open_virtual_switch capability. The
openvswitch-common will be used by reverse dependencies to
require either of the OvS packages.
* Provide virtual capabilities for all DPDK subpackages.
* Fix the dependencies in the python package to require either
of the OvS packages.
* Suggest the kmp package only if it's actually provided.
* Small cleanups.