Update allocation.asciidoc
[BUILD] Fail release if test have AwaitsFix annotations

Note this commit upgrades Forbidden APIs to version 1.5

Closes #5807
Added searching for multiple similar documents with More Like This Query DSL.

The documents are specfied by a list of ids. The index and type where each document is
fetched from is assumed to be the first specified in the URL.

Relates #4075