Remove accidentially committed default values

`-Dtests.maxFailures` and `-Dtests.failfast` should not be enabled
by default.
Set default `operation_threading` to `thread_per_shard` and exposed it as an option in the rest api.
Use TransportMasterNodeOperationAction in TransportGetIndexTemplatesAction

No need to use ClusterInfoRequest, as we do not need to access any indices.
Fix debian init script to not depend on new start-stop-daemon

By making use of the lsb provided functions, one does not depend on the start-stop daemon version to test if elasticsearch is running.
This ensures, that the init script works on debian wheezy, squeeze, current ubuntu and LTS versions.

Closes #3452
Support fuzzy queries in CompletionSuggest

Added the FuzzySuggester in order to support completion queries

The following options have been added for the fuxxy suggester

* edit_distance: Maximum edit distance
* transpositions: Sets if transpositions should be counted as one or two changes
* min_prefix_len: Minimum length of the input before fuzzy suggestions are returned
* non_prefix_len: Minimum length of the input, which is not checked for fuzzy alternatives

Closes #3465
Use awaitBusy rather than hand crafted version in tests.
Changed default operation_threading from single_thread to thread_per_shard.
Closes #3483
Postponed acknowledging put mapping requests to after master has finished processed them

Also - TransportMasterNodeOperationAction was potentially use stale cluster state

Closes #3487
Limit the number of extracted token instance per query token.

FVH deploys some recursive logic to extract terms from documents
that need to highlighted. For documents that have terms with super
large term frequency like a document that repeats a terms very
very often this can produce some very large stacks when extracting
the terms. Taken to an extreme this causes stack overflow errors
when this grow beyond a term frequency >= 6000.

The ultimate solution is a iterative implementation of the extract
logic but until then we should protect users from these massive
term extractions which might be not very useful in the first place.

Closes #3486
Catch Throwable rather than Exception if latches are present.
Added multi percolate api

The multi percolate allows the bundle multiple percolate requests into one request. This api works similar to the multi search api. The request body format is line based. Each percolate request item takes two lines, the first line is the header and the second line is the body.

The header can contain any parameter that normally would be set via the request path or query string parameters. There are several percolate actions, because there are multiple types of percolate requests:
* `percolate` - Action for defining a regular percolate request.
* `count_percolate` - Action for defining a count percolate request.
* `percolate_existing_doc` - Action for defining a percolate existing document request.
* `count_percolate_existing_doc` - Action for defining a count percolate existing document request.

Each action has its own set of parameters that need to be specified in the percolate action.
Format:
```
{"[header_type]" : {[options...]}
{[body]}
```

Depending on the percolate action different parameters can be specified. For example the percolate and percolate existing document actions support different parameters.

The following endpoints are supported:
```
POST localhost:9200/[index]/[type]/_mpercolate
POST localhost:9200/[index]/_mpercolate
POST localhost:9200/_mpercolate
```

The `index` and `type` defined in the url path are the default index and type.

Closes #3488
Also catch EsRejectedExecutionException next to
RejectedExcecutionException
better log message for none gateway, also make it debug level
remove the assert on AnalyzerWrapper
see https://issues.apache.org/jira/browse/LUCENE-5170
Removed todo
Added some comments regarding the acknowledgement logic in MetaDataMappingService.putMapping

Made left over cluster state debug log entry less verbose.
lazily create the no shard available exception
Make RestSearchAction#parseSearchXXX(RestRequest) public
When building a plugin with a new search endpoint, you need to parse the request as a searchRequest.

Methods exist in RestSearchAction class but are private.

We will modify them to be public static. This applies to:

* `RestSearchAction#parseSearchRequest(RestRequest)`
* `RestSearchAction#parseSearchSource(RestRequest)`

 Closes #3499.
Allow to update the _source mapping exclude/include dynamically when we merge mappings.

Closes #3491
UpdateMappingTests -  updateDefaultMappingSettings now creates the index with a mapping.