Allow non-existent user/group untill 5.0.2 release is released

Co-authored-by: Daijiro Fukuda <[email protected]>

fluent-package/yum/install-test.sh

@@ -83,8 +83,18 @@ for conf_path in /etc/td-agent/td-agent.conf /etc/fluent/fluentd.conf; do
     fi
 done
 
-getent passwd fluentd >/dev/null
-getent group fluentd >/dev/null
+case $1 in
+  local)
+    getent passwd fluentd >/dev/null
+    getent group fluentd >/dev/null
+    ;;
+  *)
+    # TODO: Remove this branch after the following fix is applied to the latest release.
+    # https://github.com/fluent/fluent-package-builder/pull/598
+    (! getent passwd fluentd >/dev/null)
+    (! getent group fluentd >/dev/null)
+    ;;
+esac
 
 if [ $ENABLE_UPGRADE_TEST -eq 1 ]; then
     echo "UPGRADE TEST from v4"