contrib: Fix osmocom-bb-fimware no longer available in order prebuilt pkg repo

roox: "please use the Tumbleweed repo instead if you want something that is always available"

Change-Id: I88843e7ed35c42e9b16aaff00c9c6a3973d0d6ca
diff --git a/contrib/jenkins-build-osmocom-bb.sh b/contrib/jenkins-build-osmocom-bb.sh
index 827fc94..aa2e778 100755
--- a/contrib/jenkins-build-osmocom-bb.sh
+++ b/contrib/jenkins-build-osmocom-bb.sh
@@ -5,7 +5,7 @@
 name="osmocom-bb"
 . "$(dirname "$0")/jenkins-build-common.sh"
 
-FW_RPM_URL="http://download.opensuse.org/repositories/home:/mnhauke:/osmocom:/nightly/SLE_15/x86_64/"
+FW_RPM_URL="http://download.opensuse.org/repositories/home:/mnhauke:/osmocom:/nightly/openSUSE_Tumbleweed/x86_64/"
 
 build_repo libosmocore --disable-doxygen
 build_repo_dir osmocom-bb src/host/virt_phy ${SANITIZE_FLAGS}