Tests: Improve range tests to check inclusive/exclusive on ends.

closes #8199
TEST : Disable throttleStats test

This test has been intermittently failing, disabling while I dig into it.
Add EnhancedPatternLayout to logging.yml options
Enable ClusterInfoService by default

Since we enabled the disk threshold decider by default, we need to
enable the cluster info service so that disk usages and shard sizes can
be gathered also.

Adds a test that checks that we are gathering information by default.
[SEARCH] Passing fieddata_fields as a non array causes OOM

If `fielddata_fields` are passed as a simple value instead of an array
we end up in an infinite loop createing parsed elements with null
values.
This commit validates the incoming token

Closes #8203