fix typo issue

Change-Id: I02d7a12e039620eebb836d863599e7dc3ad9d184
Signed-off-by: michael zhang <zhangcheng@rbcon.com>
Reviewed-on: http://reviews.cloudfoundry.org/13379
Tested-by: CI Master <cf-ci@rbcon.com>
Reviewed-by: Pin Xie <pxie@vmware.com>

lib/harness/service.rb

@@ -37,7 +37,7 @@ def create(service_manifest, check_available = true)
         @log.error("can't match the unique service using manifest: #{service_manifest}," +
                    " matched services:#{service_list}")
         raise RuntimeError, "can't match the unique service using manifest: #{service_manifest}," +
-                            " matched services:#{service_list}")
+                            " matched services:#{service_list}"
       end
       @log.debug("Prepare to create service: #{@instance.name}")
       begin