ostree rebase: for update tests, check we deployed custom ref

This checks we actually deployed the 'fedora-openqa' ref as we
intended to (if not, the rebase test probably won't work
properly or won't test what we want it to).

Signed-off-by: Adam Williamson <awilliam@redhat.com>

tests/rpmostree_rebase.pm

@@ -23,6 +23,9 @@ sub run {
 
     # get current branch
     my $current = script_output "rpm-ostree status -b | grep fedora";
+    if (get_var("ADVISORY_OR_TASK")) {
+        die "Expected 'fedora-openqa' ref not deployed!" unless ($current =~ m/fedora-openqa/);
+    }
 
     my $arch = lc(get_var("ARCH"));