1.7.6-1

• 1.7.6-1 | Jun 18 2019:
  [New] add mitigation options for TCP SACK Panic vulnerability
  SYSCTL_TCP_NOSACK and BLK_TCP_SACK_PANIC added to conf.apf
  https://access.redhat.com/security/vulnerabilities/tcpsack
  [Change] updated autoconf template
  [Change] ignore value of BLK_TCP_SACK_PANIC when SYSCTL_TCP_NOSACK is set
  [Change] make init script LSB compliant for use with systemd; pr #26
  [Fix] README typos; pr #28
  [Fix] flush ip6tables rules on stop/flush if USE_IPV6 enabled; pr #28
  [Fix] only the first nameserver in resolv.conf would be whitelisted when
  RESV_DNS_DROP is set enabled; issue #25
  [Fix] change ipv4.ip_local_port_range to not emmit errors ref:
  Marco Padovan
  https://access.redhat.com/solutions/2887631
  https://www.spinics.net/lists/netdev/msg330895.html