[SC-23347] fix(redis): remove duplicate redis prefix from memory metrics (#152)

Remove redis. prefix from memory.used.max and memory.used.rss field names.
The LineProtocolParser already prepends the measurement name (redis.) to all
fields, causing double-prefixed metric names (redis.redis.memory.used.max)

Author: boratanrikulu

spm-monitor-redis/src/main/java/com/sematext/spm/client/redis/RedisStatsCollector.java

@@ -90,8 +90,8 @@ protected void appendStats(StatValues statValues, Map<String, Object> outerMetri
 
     statValues.setMetrics(new UnifiedMap<String, Object>());
     statValues.getMetrics().put("memory.used", extractors.get(0).extract(info));
-    statValues.getMetrics().put("redis.memory.used.max", extractors.get(1).extract(info));
-    statValues.getMetrics().put("redis.memory.used.rss", extractors.get(2).extract(info));
+    statValues.getMetrics().put("memory.used.max", extractors.get(1).extract(info));
+    statValues.getMetrics().put("memory.used.rss", extractors.get(2).extract(info));
     statValues.getMetrics().put("clients.connected", extractors.get(3).extract(info));
     statValues.getMetrics().put("replication.slaves.connected", extractors.get(4).extract(info));
     statValues.getMetrics().put("replication.master.last.io.seconds.ago", extractors.get(5).extract(info));