Copy metadata files for RedHat artifacts without the '-r' flag.

According to the man page for 'cp':
Historic versions of the cp utility had a -r option.  This implementation supports that option; however, its use is strongly discouraged, as it does not correctly copy special files, symbolic links, or fifo's.

olm/create-artifacts.sh

@@ -60,7 +60,7 @@ done
 
 if [ $MANIFEST_NAME = "redhat" ]; then
   mkdir -p $BUNDLE_DIR/metadata
-  cp -r ${SCRIPTPATH}/metadata/ $BUNDLE_DIR/metadata
+  cp ${SCRIPTPATH}/metadata/* $BUNDLE_DIR/metadata
 fi
 
 pushd ${BUNDLE_DIR}