bonding: add new/missed bonding options (bsc#905750)

Added arp validate filter, filter_active, filter_backup option
values and new arp validate any/all targets, packets-per-slave,
lp-interval and tlb-dynamic-lb options.
service: added After=network-pre in wicked (bsc#901337)

Added After=network-pre.target ordering dependency for services
which want to run before network is set up, e.g. firewall init.
service: no Before=SuSEfirewall2 in wicked (bsc#895600)

Removed unneeded Before=SuSEfirewall2.service ordering dependency.
service: removed automatically resolved targets (bsc#895600)

Removed unneeded shutdown.target and multi-user.target, which
are added by systemd automatically as needed.
Merge pull request #474 from mtomaschewski/systemd-ordering-1

systemd: wicked ordering dependency fixes (bsc#895600,bsc#901337)
Looks good, by code inspection.
Merge pull request #475 from mtomaschewski/systemd-ordering-2

systemd: wicked ordering dependency cleanup (bsc#895600,bsc#901337)
Merge pull request #473 from mtomaschewski/bonding-newopts

bonding: add new/missed bonding options (bsc#905750)
client: fixed segfault in status (bsc#908554)
Merge pull request #476 from mtomaschewski/master-status

client: fixed segfault in status (bsc#908554)
gitignore: ignore cscope files
Merge pull request #477 from kmroz/cscope-to-gitignore

gitignore: ignore cscope files