os-release: New line required for each key,value in file

New line's is required in os-release file. Every key, value
pair should be sperated by a new line.

Signed-off-by: Sujith H <Sujith_Haridasan@mentor.com>
Merge pull request #136 from sharidas/os-release-fix

os-release: New line required for each key,value in file