Add gcc-sanitizers package to TOOLCHAIN_TARGET_TASK which allows linking of
libasan for detecting use-after-free and other memory corruption issue in
built applications/libraries.
Bug-AGL: SPEC-3040
Change-Id: Idad618e2bd0e9fa98baa9a3befc694c5bddeb711 Signed-off-by: Matt Ranostay <matt.ranostay@konsulko.com>