Improve default mapfile environment

Author: yjacolin

config.conf.tpl

@@ -1,6 +1,6 @@
 CONFIG
   ENV
-    ##MS_MAP_PATTERN "^/etc/mapserver"
+    MS_MAP_PATTERN "^\/etc\/mapserver\/([^\.][-_A-Za-z0-9\.]+\/{1})*([-_A-Za-z0-9\.]+\.map)"
 
 #if _debug > 0 || _layerdebug > 0
     MS_ERRORFILE "stderr"
@@ -9,7 +9,7 @@ CONFIG
     PROJ_LIB _proj_lib
   END
   MAPS
-    BASEMAPS "/etc/mapserver/osm-default.map"
+    BASEMAPS "/etc/mapserver/osm-google.map"
   END
 END