param: set the flags on a s3 loadparm context

param: set the flags on a s3 loadparm context

By setting up the flags when we initialize the context, the flags can be
accessed by lib/param at any time.

Change-Id: I60d4f3a9108560e204cf5f37da9c7d995939e146
Signed-off-by: Garming Sam <garming@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Nadezhda Ivanova <nivanova@samba.org>