icinga-build-deb-source: Skip uscan entirely if there's a tarball

icinga-build-deb-source

@@ -45,12 +45,12 @@ if [ "${ICINGA_BUILD_TYPE}" == "release" ] ; then
   (
     set -ex
 
-    if [ "${USCAN_DOWNLOAD}" == "no" ]; then
+    if [ "${CI_SKIP_USCAN}" == "yes" ]; then
       cp ./*.tar* "${BUILDDIR}/"
+    else
+      cd "${BUILDDIR}/${ICINGA_BUILD_PROJECT}"
+      run-retry-timeout uscan --download-current-version --verbose
     fi
-
-    cd "${BUILDDIR}/${ICINGA_BUILD_PROJECT}"
-    run-retry-timeout uscan --download-current-version --verbose
   )
 else
   (