contrib: common: create_bin_tgz supports sbin dir now

This is a preparation for inclusion of osmocom-bb build job, which
installs binaries such as osmocon in sbin.

Change-Id: I562721af82e481e926ee65dbcd9dcc5b55057ae8
diff --git a/contrib/jenkins-build-osmo-mgw.sh b/contrib/jenkins-build-osmo-mgw.sh
index d4ff0b9..43473c6 100755
--- a/contrib/jenkins-build-osmo-mgw.sh
+++ b/contrib/jenkins-build-osmo-mgw.sh
@@ -9,4 +9,4 @@
 build_repo libosmo-netif --enable-sanitize --disable-doxygen
 build_repo osmo-mgw --enable-sanitize
 
-create_bin_tgz osmo-bsc_mgcp osmo-mgw
+create_bin_tgz "osmo-bsc_mgcp osmo-mgw"