This has been encountered when introducing redis in our production
matrix deployment. /data partition is owned by root:root by default
otherwise.
Change-Id: Ic148ff25837c6e8da394a5124556481343ea2873
If set, this enables internal redis authentication scheme. Supports
secretRefs, as well as values passed directly.
Change-Id: Ie902b8d79fdc4aa83ad8ad123e79f0bc80c1251f