Security update for systemd (important)

This update for systemd fixes the following issues:

Security issues fixed:

• CVE-2018-15688: A buffer overflow vulnerability in the dhcp6 client of
  systemd allowed a malicious dhcp6 server to overwrite heap memory in
  systemd-networkd. (bsc#1113632)
• CVE-2018-15686: A vulnerability in unit_deserialize of systemd allows an
  attacker to supply arbitrary state across systemd re-execution via
  NotifyAccess. This can be used to improperly influence systemd execution
  and possibly lead to root privilege escalation. (bsc#1113665)

Non-security issues fixed:

• dhcp6: split assert_return() to be more debuggable when hit

• core: skip unit deserialization and move to the next one when
  unit_deserialize() fails

• core: properly handle deserialization of unknown unit types (#6476)

• core: don’t create Requires for workdir if "missing ok" (bsc#1113083)

• logind: use manager_get_user_by_pid() where appropriate

• logind: rework manager_get_{user|session}_by_pid() a bit

• login: fix [email protected] case, so we don’t allow nested sessions (#8051)
  (bsc#1112024)

• core: be more defensive if we can’t determine per-connection socket peer
  (#7329)

• socket-util: introduce port argument in sockaddr_port()

• service: fixup ExecStop for socket-activated shutdown (#4120)

• service: Continue shutdown on socket activated unit on termination
  (#4108) (bsc#1106923)

• cryptsetup: build fixes for "add support for sector-size= option"

• udev-rules: IMPORT cmdline does not recognize keys with similar names
  (bsc#1111278)

• core: keep the kernel coredump defaults when systemd-coredump is disabled

• core: shorten main() a bit, split out coredump initialization

• core: set RLIMIT_CORE to unlimited by default (bsc#1108835)

• core/mount: fstype may be NULL

• journald: don’t ship systemd-journald-audit.socket (bsc#1109252)

• core: make "tmpfs" dependencies on swapfs a "default" dep, not an
  "implicit" (bsc#1110445)

• mount: make sure we unmount tmpfs mounts before we deactivate swaps
  (#7076)

• tmp.mount.hm4: After swap.target (#3087)

• Ship systemd-sysv-install helper via the main package This script was
  part of systemd-sysvinit sub-package but it was wrong since
  systemd-sysv-install is a script used to redirect enable/disable
  operations to chkconfig when the unit targets are sysv init scripts.
  Therefore it’s never been a SySV init tool.

This update was imported from the SUSE:SLE-12-SP2:Update update project.