This commit adds basic tests that store a user and a role using the native API. The test checks
that the user and role can be used prior to starting the upgrade. The realm and roles caches are
also cleared to ensure the next authentication will require a read from the security index; this
ensures we are actually testing reads from the index.
Original commit: elastic/x-pack-elasticsearch@396862da94
This change allows reads of our native users and roles when the template version has not been updated to
match the current version. This is useful for rolling upgrades where the nodes are also being actively
queried and/or indexed into. Without this, we can wreak havoc on a cluster by causing exceptions during
replication, which leads to shard failures. On nodes that match the version defined in the template,
write operations are allowed since we know that we are backwards compatible in terms of format but we
may have added new fields and shouldn't index them until the mappings and template have been updated.
As part of this, the rolling upgrade tests from core were used as the basis for a very basic set of tests
for doing a rolling upgrade with x-pack.
Closeselastic/elasticsearch#4126
Original commit: elastic/x-pack-elasticsearch@9be518ef00
Jay Modi
jaymode