Add an openSUSE Tumbleweed devstack non-voting check job

This adds the necessary fixes to pass a devstack run
on openSUSE Tumbleweed. Also removes opensuse 42.2 as it
is EOL for some time already and no longer actively tested
in the OpenStack infra.

Depends-On: I1b68c08c07cf6653ea58506f738cbe0054b38f3a
Change-Id: I2894482deef063fd02b0818c695a2ddbf6767039
diff --git a/lib/swift b/lib/swift
index 1187846..6cda9c8 100644
--- a/lib/swift
+++ b/lib/swift
@@ -557,7 +557,11 @@
 
     local swift_log_dir=${SWIFT_DATA_DIR}/logs
     sudo rm -rf ${swift_log_dir}
-    sudo install -d -o ${STACK_USER} -g adm ${swift_log_dir}/hourly
+    local swift_log_group=adm
+    if is_suse; then
+        swift_log_group=root
+    fi
+    sudo install -d -o ${STACK_USER} -g ${swift_log_group} ${swift_log_dir}/hourly
 
     if [[ $SYSLOG != "False" ]]; then
         sed "s,%SWIFT_LOGDIR%,${swift_log_dir}," $FILES/swift/rsyslog.conf | sudo \