Comment # 3 on bug 917106 from Andrew Findlay

Created attachment 622873 [details]
Reboot log with wicked nanny enabled

I now have a workaround for this.
I enabled nanny by adding this to /etc/wicked/local.xml:

<!-- Local configuration file -->
<config>
  <use-nanny>true</use-nanny>
</config>

Now the WiFi interface comes up at boot-time as it should.
Logfile attached (with passphrases removed).
The startup process looks rather different now.