fix fslocal file_exists

Change-Id: I871a4912741a0542f3b70d1fdb0d6ca118aa0da3
Signed-off-by: tierno <alfonso.tiernosepulveda@telefonica.com>
diff --git a/osm_common/fslocal.py b/osm_common/fslocal.py
index 7794754..b90b25e 100644
--- a/osm_common/fslocal.py
+++ b/osm_common/fslocal.py
@@ -93,6 +93,8 @@
         else:
             f = "/".join(storage)
         if os.path.exists(self.path + f):
+            if not mode:
+                return True
             if mode == "file" and os.path.isfile(self.path + f):
                 return True
             if mode == "dir" and os.path.isdir(self.path + f):