Update forbidden-apis to 1.5.1 and remove the relaxed missing classes error.
Merge remote-tracking branch 'upstream/master'
[TESTS] spin in a loop checking request breaker, because multiple clusters could be running
Docs: Fix typo in scripting.asciidoc

Closes #7070
Docs: Fix typo in scripting.asciidoc

Replace the mvel by groovy in the forgotten place.
I add the previous change in this one.
Sorry for the spam!

Closes #7071
Add support for the `_name` parameter to the simple_query_string query
[TEST] Add basic upgrade test script

This commit adds a basic full cluster restart upgrade script that tests
upgrades of elasticsearch across major version. In contrast to the BWC
tests we are running using the java test framework this test uses a python
script as well as the REST APIs to ensure upgrades across major version work and
indices are compatible.

The upgrade test starts 2 or more nodes of an old elasticserach version, indexes
a random number of documents into the running nodes and executes a full cluster restart.
After the nodes are recovered a small set of basic checks are executed to ensure all
documents are still searchable and field data can be loaded etc.

Closes #7074
[TESTS] Don't create an unclosed threadpool in BigArraysTests.
[TEST] wait for yellow after index was created in BWC tests
[TEST] Make default flush opertion blocking
[TEST] Pick random version from backwards directory

The upgrade tests required to specify the lower and the upper version
that it should run against. This commit adds support for random picks
if either the lower or the upper or both are not specified.
Test: finish all merges before test returns to side step 'Delete Index failed - not acked' failure
[TEST] randomize byte size and thread count in breaker tests
Packaging: Dont remove ancestors on deb removal

The used -p option could result in accidentally deleting more directories
than /var/lib/elasticsearch - so this option was removed

Note: This only happens if the directories are empty, but still isnt needed.

Relates #5770
Term Vectors API: adds support for wildcards in selected fields

This could useful to generate all term vectors or a chosen set of them.

Closes #7061
Merge branch 'master' of https://github.com/elasticsearch/elasticsearch
[TEST] Rest API: cat.count regexp matchers now explicitely test for newline
Docs: Fix syntax on lang-analyzer

Some of the language analyzer documentation contained invalid json.

Closes #7098
[TEST] Concurrent percolation more randomized + safe use of rand
Rewrote post-filter.asciidoc

Closes #5166