remove port arrays and cleanup interface dependencies (bsc#1205604)

[mtomaschewski]

• Remove port arrays from bond,team,bridge,ovs-bridge and consistently use config and state info attached to the port interface as in rtnetlink(7).
• Cleanup ifcfg parsing, schema configuration and service properties
• Migrate ports in xml config and policies already applied in nanny
• Remove "missed config" generation from finite state machine, which is is completed while parsing the config or while xml config migration.
• Issue a warning when "lower" interface (e.g. eth0) config is missed while parsing config depending on it (e.g. eth0.42 vlan).
• Resolve ovs master to the effective bridge in config and wickedd
• Implement netif-check-state require checks using system relations from wickedd/kernel instead of config relations for ifdown and add linkDown and deleteDevice checks to all master and lower references.
• Add a wicked <ifup|ifdown|ifreload> --dry-run … option to show the system/config interface hierarchies as notice with +/- marked interfaces to setup and/or shutdown.

[mtomaschewski]

Fixed an issue causing to report errors (and twice) when a blacklisted ifcfg file like *.bak created by firewalld exists:

Oct 20 11:32:39 install wicked[4871]: Rejecting blacklisted ifcfg-file: /etc/sysconfig/network/ifcfg-ens4.bak
Oct 20 11:32:39 install wicked[4871]: Failed to read ifcfg-file '/etc/sysconfig/network/ifcfg-ens4.bak': No such file or directory

[mtomaschewski]

The commit 8c1631b is an issue that happens also with master, this branch increases it's probability.

[JeffreyCheung]

Hi @cfconrad , can you kindly provide the PR review for @mtomaschewski please , thanks :)

[cfconrad]

hi, @JeffreyCheung sorry for not been transparent here, but @mtomaschewski and I are working heavily on this PR offline. As you can imaging this big change need a lot of testings (manual and automated). So plz stay tuned we are on it!

[JeffreyCheung]

Thank @cfconrad , very much appreciated :)