See gh-8939

See gh-8938

This commit reverts 65a82576 as the Couchbase driver must be upgraded from
2.3.x to 2.4.x

See gh-8939

This commit reverts 2deab52a as the Couchbase driver must be upgraded from
2.2.x to 2.4.x

See gh-8938

Closes gh-8939

Closes gh-8938

* pr/8935:
  Upgrade to Spring Integration 4.3.9.RELEASE

Closes gh-8935

Closes gh-8712

* pr/8930:
  Upgrade to Spring AMQP 1.7.2.RELEASE

Closes gh-8930

* pr/8929:
  Upgrade to Spring AMQP 1.6.9.RELEASE

Closes gh-8929

Update SpringBootTestContextBootstrapper to detect `@ContextHierarchy`
annotations so that only the last child creates a
`WebApplicationContext`.

Prior to this commit a context hierarchy would start two embedded web
servers which is inconsistent with the `SpringApplicationBuilder`
behavior.

Fixes gh-8311

Allow `PathExtensionContentNegotiationStrategy` to be bypassed by
actuator endpoints. Prior to this commit calling `/loggers/com.aaa.cab`
would return a HTTP 406 response due to `.cab` being a known extension.

Fixes gh-8765

* pull8924:
  Fail fast on getKeyFromServer() failure

Update `ResourceServerTokenServicesConfiguration` to fail fast if the
`getKeyFromServer()` call fails. Since the key is part of the singleton
`JwtAccessTokenConverter` bean there is not real way to refresh without
restarting the application.

A hard failure seems preferable to an inconsistent state.

Closes gh-8924

Closes gh-8497

* pr/8906:
  Polish "Fix statsd metrics collection for names with ":""
  Fix statsd metrics collection for names with ":"

Closes gh-8906

Statsd server is ignoring malformed metrics. This change introduces
a basic sanitizing to metric names for avoid losing those metrics.

See gh-8906

Closes gh-8921