shadow-native: Disable nscd support

shadow-native: Disable nscd support

Disabling nscd support prevents error messages when shadow utilities attempt
to trigger nscd to reload.  This does nothing unless the user is root, and even
if they are root, it's the wrong action to perform when creating a target fs.

(From OE-Core rev: eb6fb917b7a6745b296c8ae0a5bf66f498bf3576)

Signed-off-by: Mark Hatle <mark.hatle@windriver.com>
Signed-off-by: Elizabeth Flanagan <elizabeth.flanagan@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>