fix for gh-1331 MetricFilter now supports uri template variables when available
gh-1331 defaulting 404 response metrics to "unkownPath" when no matching handler can be found

Fixes gh-1331, Fixes gh-1333
Change unknownPath to unmapped
Merge branch '1.1.x'
Preparation steps.

remove those when done
Add support for Redis Sentinel Configuration.

Spring Data Redis 1.4.0 will introduce redis Sentinel support. Basically sentinels can be configured using RedisSentinelConfiguration. When applied RedisConnectionFactory uses the sentinel configuration to determine current master.

We’ve added Sentinel config properties to RedisProperties:

spring.redis.sentinel.master=mymaster #name of redis server
spring.redis.sentinel.nodes=127.0.0.1:26379,127.0.0.1:26380 #deliminated list of sentinels.

In case we detect a bean of type RedisSentinelConfiguration we’ll use that one to configure the connection factory.

In order to get the tests working in a non monitored environment we check for the availability of sentinel nodes.

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Note: At this time sentinel support is only available for jedis.