infiniband: start after rdma service not openibd

It were openibd on SLE-11. New name is rdma.service.
Turn "No valid config files found" into a debug msg

Signed-off-by: Olaf Hering <olaf@aepfle.de>
Merge pull request #169 from olafhering/olh-misc
Update unquote to handle invalid sysconfig variables properly

Signed-off-by: Olaf Hering <olaf@aepfle.de>
iflist: check validity of attribute before extracting payload

Hopefully will fix bnc#863371
Merge pull request #173 from kmroz/strlen-segfault2

iflist: check validity of attribute before extracting payload
Merge pull request #172 from olafhering/olh-bnc864635