Fix bug when reusing renderlist on stencil renderers

Fix bug when reusing renderlist on stencil renderers

[Issue#] N/A
[Problem] When reusing renderlists for stencil renderers, the stencil renderers
are rendered in the color buffer sometimes.
[Cause] When reusing a renderlist for stencil renderers the appropiate flags
where not seted on the renderlist which causes this renderers to be rendered in
the color buffer.
[Solution] Added a function to reset the flags correctly for stencil
renderlists as in the rest of renderlists (opaque, transparent and overlay)

Change-Id: Ic80a33af8ac8ac6bf606610fae5d6279cee8cf81
Signed-off-by: David Steele <david.steele@partner.samsung.com>