s3: smbd: Remove bool dfs_pathnames paramter from resolve_dfspath_wcard().

s3: smbd: Remove bool dfs_pathnames paramter from resolve_dfspath_wcard().

Start cleaning up the pathname parsing to move flags2 checks into UCF_FLAGS
function.

NB. This now only sets *ppath_contains_wcard inside resolve_dfspath_wcard()
if dfs_redirect() sets path_contains_wcard to true, which is a change
from the previous code which could potentially set *ppath_contains_wcard
to an uninitialized value if dfs_redirect() returned without setting
path_contains_wcard.

Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Uri Simchoni <uri@samba.org>