Skip 3.2.3 user agent filter (elastic#10020)

this is related to elastic#10017

version 3.2.3 updates the regular expressions and introduces many changes in how strings are parsed, which may be too disruptive for the typical user.

move queue opening bits from constructor to open_queue method (elasti…

…c#9986)

backport of elastic#9985 on 6.4

bump version to 5.6.12 (elastic#9935)

disable testWithRealSecondJvm

Fixes elastic#9917

replace non ascii character failing javadoc compilation (elastic#9912)

prevent tests from stalling by ensuring files we check get flushed

Fixes elastic#9795

Fix relative path for arcsight module. Fixes elastic#9714

Fixes elastic#9715

Backport new PQ implementation to 5.6 (elastic#9698)

Add conditional coding to set correct default for codec (elastic#9363)

Fix conditional coding

Fixes elastic#9139