console-image, core-image-sato: Add quota to rootfs

JIRA: SB-3746

Add quota support in the rootfs

Signed-off-by: Sujith H <Sujith_Haridasan@mentor.com>
You don't need to inject this leading space here. It's minor, but worth noting so you know for future reference. `+=` and `=+` add their own space separator. `_append`, `_prepend`, `.=`, and `=.` do not.