xen-create-image: Add network and maskbits to exported env
hooks: Misc. fixes to the opensuse network config hook
hooks: Integrate cleaned-up changes to opensuse from production

Rewritten sed expression to fix the configuration in a single pass.
hooks: opensuse: Split DNS search list into a variable
xen-create-image: Add --dnssearch and --ntpsearch options
Merge pull request #2 from ismaell/master

Various fixes for OpenSUSE networking