lintian errors, version 2.11.0+2019.06.25+git.9ebe7950+ds1-2

• E: openvswitch-switch: init.d-script-not-included-in-package etc/init.d/openvswitch-nonetwork
• E: openvswitch source: python-depends-but-no-python-helper openvswitch-switch openvswitch-vtep
• E: openvswitch source: missing-notice-file-for-apache-license NOTICE