Security update for openvswitch (moderate)

This update for openvswitch to version 2.7.6 fixes the following issues: These security issues were fixed: - CVE-2018-17205: Prevent OVS crash when reverting old flows in bundle commit bsc1104467. - CVE-2018-17206: Avoid buffer overread in BUNDLE action decoding bsc1104467. - CVE-2018-17204:When...