New release 2.2.55

=== Breaking changes
 - N/A

=== New features
 - Support the lsc-interrupt option for OVS DPDK interfaces. (045ed3c4)
 - Support referring route table ID by VRF interface name. (40369dcb)

=== Bug fixes
 - nm dns: Do not use interface DNS for static ip + static DNS. (f815c226)
 - python: Fix the license disclaimer. (4b9a28c3)

Signed-off-by: Gris Ge <fge@redhat.com>