Javadoc
Coalesce exception messages containing HTTP REST calls to all server shards into a single bucket.
This greatly reduces the amount of metric spam.
Example: https://vb0706.foo.bar.com:8983 --> https://.foo.bar.com:8983
Example: UnknownHostException: vb0706.foo.bar.com -> UnknownHostException: .foo.bar.com
Example: insertAndQueryTweets_shard30_replica91 --> insertAndQueryTweets_shard_replica
Example: collection: collection1 slice: shard130 --> collection: collection1 slice: shard
Example: &NOW=1448689151133 -> &NOW=