This commit removes the undocumented, test used only, setting xpack.monitoring.collection.collectors. It should not be used by users at all, and has been initially created for collector tests.
From elastic/elasticsearch#4957
Original commit: elastic/x-pack-elasticsearch@0fa39a94b5
The Elastic Secrets vault is served via HTTPS with a Let's Encrypt
certificate. The root certificate that cross-signed the Let's Encrypt
certificates were not trusted by the JDK until 8u101. This commit adds a
version check at the start of the build to make it clear the cause of
the underlying issue, and what the fix is.
Relates elastic/x-pack-elasticsearch#541
Original commit: elastic/x-pack-elasticsearch@6bf8076cb6