This change migrates all of the xpack code to use the new ThreadContext when
dealing with headers and context data. For the most part this is a simple
cutover, but there are some things that required special casing. The internal
actions that executed by a user's requests need to forcefully drop the context
and set the system user. The workaround for this will be improved in a followup.
Additionally, the RequestContext still lives on due to the OptOutQueryCache,
which requires some core changes to fix this issue.
Original commit: elastic/x-pack-elasticsearch@87d2966d93
My previous change only fixed it when it resolves to something different than localhost.
But in some cases, it does not resolve at all, we must specify the IP.
Original commit: elastic/x-pack-elasticsearch@547eb4c42f
This commit fixes the integration tests and qa test after the reorganization to be
packaged as a single plugin.
Original commit: elastic/x-pack-elasticsearch@d6f488627f
jaymode
Robert Muir
Ryan Ernst