tests: (OCD) Add space at the end of the sample string

When the strings are concatenated there needs to be a space or there is
a punctuation sign without a space after it.

Change-Id: I1caf6c6701215cd028caf6b8052176e2be36ce2e
Signed-off-by: Saggi Mizrahi <smizrahi@redhat.com>
Reviewed-on: http://gerrit.ovirt.org/11624
Reviewed-by: Adam Litke <agl@us.ibm.com>
Tested-by: Adam Litke <agl@us.ibm.com>
Reviewed-by: Dan Kenigsberg <danken@redhat.com>