Bump upper version of puppetlabs-vcsrepo

Now v8.0.0 is used in CI.

Change-Id: Iff2cd5c456c521bbf9412a6fb07bc8bcade1563e
Signed-off-by: Takashi Kajinami <kajinamit@oss.nttdata.com>

metadata.json

@@ -11,7 +11,7 @@
         },
         {
             "name": "puppetlabs/vcsrepo",
-            "version_requirement": ">=2.4.0 <8.0.0"
+            "version_requirement": ">=2.4.0 <9.0.0"
         },
         {
             "name": "openstack/openstacklib",