Add templated redis

rc.redis/redis/template/data/check

@@ -0,0 +1,7 @@
+#!/bin/execlineb -P
+
+redirfd -w 2 /dev/null
+getcwd -E CWD
+backtick -E port { basename $CWD }
+backtick -En PING { redis-cli -p $port ping }
+eltest $PING = PONG