Replace spaces with -'s

On Centos, the lsb_release returns the text on one line. To solve that,
we need to replace not just newlines, but also spaces in the output
to match what lsb_release -i -r -s | xargs | tr ' ' '-' will do.

Change-Id: I5e4ecdb918d1f9e3c225974f89d7ceb4f1abc4f1