[CA-124983] Fix: Issues installing XenCenter with no network

Signed-off-by: Gabor Apati-Nagy <gabor.apati-nagy@citrix.com>
Merge pull request #8 from GaborApatiNagy/master

[CA-124983] Fix: Issues installing XenCenter with no network
Merge branch 'master' of https://github.com/xenserver/xenadmin