Fix release script not uploads OpenShift deploy YAML file (#1456)

hack/release.sh

@@ -254,6 +254,14 @@ attach_github_release_yamls() {
            --tag $gittag \
            --name ${c}-${version}.yaml \
            --file $BUILDDIR/yamls/${c}-${version}.yaml
+
+        gothub upload \
+           --replace \
+           --user fission \
+           --repo fission \
+           --tag $gittag \
+           --name ${c}-${version}-openshift.yaml \
+           --file $BUILDDIR/yamls/${c}-${version}-openshift.yaml
     done
 }